+* [Try Scheme in your browser](http://tryscheme.sourceforge.net/) (slow, bare-bones)
+* This site's guide to [[Installing Scheme|/installing#scheme]]
+* This site's [[explanation of the differences between Scheme, OCaml, and Haskell|rosetta1]]
+
+<!-- -->
+* Wikipedia on
+[Lisp](http://en.wikipedia.org/wiki/Lisp_%28programming_language%29),
+[Scheme](http://en.wikipedia.org/wiki/Scheme_%28programming_language%29),
+[Racket](http://en.wikipedia.org/wiki/Racket_%28programming_language%29), and
+[Chicken](http://en.wikipedia.org/wiki/CHICKEN_%28Scheme_implementation%29)
+
+
+## Tutorials ##
+
+* [Welcome to Racket](http://docs.racket-lang.org/guide/intro.html#%28part._.Interacting_with_.Racket%29) from Racket Guide
+* Chicken [Getting started](http://wiki.call-cc.org/man/4/Getting%20started)
+
+If you are new to programming or if you have the patience to do so, you should work through a textbook:
+
+* a recommended text available online is [Teach Yourself Scheme in Fixnum Days](http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html)
+* the *Little Schemer* book(s) we recommended for the seminar are good introductions, requiring more commitment
+* [How to Design Programs](http://www.ccs.neu.edu/home/matthias/HtDP2e/) (HtDP),
+by Matthias Felleisen, et al., is another good choice, which the Racket group recommends
+(the [1st ed](http://htdp.org/2003-09-26/Book/) <!-- go up a level for solutions, extra problems, errata -->
+is also available, and covers some additional topics like mutation; whenever the book says "Scheme," you can read it as "Racket")
+
+If you're already a programmer and you're in more of a hurry:
+
+* you could look at the [Quick Introduction to Racket](http://docs.racket-lang.org/quick/index.html), which uses DrRacket and a picture-drawing library
+* or [An Introduction to Lambda Calculus and Scheme](http://www.jetcafe.org/~jim/lambda.html)
+
+
+
+## Advanced Racket Docs ##
+
+* [Racket Guide](http://docs.racket-lang.org/guide/index.html) starts with a tutorial, then describes the rest of the Racket language. Intended for programmers who are new to (at least some part of) Racket. If you are new to programming, you should instead start with one of the textbooks listed above. Describes parts of the Racket language that go beyond the learning-oriented fragments of HtDP.
+* [Racket Reference](http://docs.racket-lang.org/reference/index.html) defines the core Racket language and its most prominent libraries. Less friendly than Racket Guide, but more precise and complete.
+* <form action="http://docs.racket-lang.org/search/index.html" method="get">
+Racket API Search: <input type="text" name="q" /> |
+racket/[help](http://docs.racket-lang.org/reference/Interactive_Help.html)
+</form>
+* [#lang r5rs](http://docs.racket-lang.org/r5rs/index.html), `'cons` expresses `mcons`
+* [#lang r6rs](http://docs.racket-lang.org/r6rs/index.html) or #!r6rs
+* Supported [SRFIs](http://docs.racket-lang.org/srfi/index.html)
+* [Libraries and collections](http://docs.racket-lang.org/reference/collects.html)
+* [(require data)](http://docs.racket-lang.org/data/index.html)
+* [(require math)](http://docs.racket-lang.org/math/index.html)
+* racket/[enter and rerequire](http://docs.racket-lang.org/reference/interactive.html)
+* [Debugging](http://docs.racket-lang.org/reference/debugging.html) |
+the [Stepper](http://docs.racket-lang.org/stepper/index.html)
+* [Deploying](http://docs.racket-lang.org/guide/running.html)
+* [raco](http://docs.racket-lang.org/raco/index.html) cmdline tool
+
+<!-- -->
+* Macros in [Guide](http://docs.racket-lang.org/guide/macros.html) |
+[Reference](http://docs.racket-lang.org/reference/Macros.html)
+* [Macro debugger](http://docs.racket-lang.org/macro-debugger/index.html)
+
+
+<!-- -->
+* Racket: [latest release](http://download.racket-lang.org/) |
+[blog](http://blog.racket-lang.org/) |
+[wiki](https://github.com/plt/racket/wiki)
+* [Style guidelines](http://docs.racket-lang.org/style/index.html) <!-- "How to Program Racket" -->
+* [raco pkg](http://docs.racket-lang.org/pkg/) package manager |
+[repository](http://pkgs.racket-lang.org/#)
+* Racket [source](https://github.com/plt/racket/) |
+[bugs](http://bugs.racket-lang.org/)
+
+<!-- -->
+* [[Extending Racket]] <!-- this site -->
+* Typed Racket [Guide](http://docs.racket-lang.org/ts-guide/index.html) |
+[Reference](http://docs.racket-lang.org/ts-reference/index.html)
+* [Lazy Racket](http://docs.racket-lang.org/lazy/index.html)
+* [PLT Redex](http://redex.racket-lang.org/), for specifying and testing operational semantics
+
+
+## Advanced Chicken Docs ##
+
+* [(declare (uses *unit*)) vs (include "*path*")](http://wiki.call-cc.org/man/4/Basic%20mode%20of%20operation)
+* Using [csi](http://wiki.call-cc.org/man/4/Using%20the%20interpreter) |
+[csc](http://wiki.call-cc.org/man/4/Using%20the%20compiler) |
+[deploying](http://wiki.call-cc.org/man/4/Deployment)
+* Supported [language](http://wiki.call-cc.org/man/4/Supported%20language) |
+[standards](http://wiki.call-cc.org/supported-standards)
+* <form action="http://api.call-cc.org/cdoc" method="get">
+Chicken API Search:
+<a href="">Chickadee</a> <input name="q" type="text" />
+<input type="submit" name="query-name" hidden value="Look+up" />
+<input type="submit" name="query-regex" value="regex" />
+</form>
+* [FAQ](http://wiki.call-cc.org/man/4/faq)
+* Chicken [development](http://code.call-cc.org/#development) |
+[process](http://wiki.call-cc.org/development-process) |
+[bugs](http://bugs.call-cc.org/)
+
+
+<!-- -->
+* [chicken-setup](http://manpages.ubuntu.com/manpages/karmic/man1/chicken-setup.1.html)
+* [chicken-install](http://manpages.ubuntu.com/manpages/utopic/en/man1/chicken-install.1.html)
+* Eggs: [managing](http://wiki.call-cc.org/eggs) |
+[authoring](http://wiki.call-cc.org/eggs%20tutorial)
+([more](http://wiki.call-cc.org/man/4/Extensions)) |
+[repository](http://wiki.call-cc.org/chicken-projects/egg-index-4.html)
+* [Distributed egg repos](http://wiki.call-cc.org/distributed-egg-repos)
+* Tutorial on writing eggs: [1](http://shisaa.jp/postset/chicken-scheme-1.html) [2](http://shisaa.jp/postset/chicken-scheme-2.html) [3](http://shisaa.jp/postset/chicken-scheme-3.html)
+* [Data model](http://wiki.call-cc.org/man/4/Data%20representation) |
+[internals](http://wiki.call-cc.org/Internals) |
+[FFI](http://wiki.call-cc.org/man/4/Interface%20to%20external%20functions%20and%20variables)
+
+
+
+## Other Scheme Links ##
+
+The Scheme language is standardized; the various implementations of the language usually adhere to what's published in the current standard and add on
+different handy extensions. The first standard was published in 1975. A revision was published a few years later called "The revised report on Scheme, a
+dialect of Lisp." Thereafter, revisions of the standard were titled "The Revised Revised Report..." and so on, or "The Revised^n Report..." for
+short. One widely implemented standard is
+[The Revised^5 Report on Scheme](http://www.schemers.org/Documents/Standards/R5RS/HTML/),
+or R5RS, published in 1998. Another standard
+[R6RS](http://www.r6rs.org/final/html/r6rs/r6rs.html)
+([libraries](http://www.r6rs.org/final/html/r6rs-lib/r6rs-lib.html))
+was ratified in 2007, but had many detractors and wasn't fully accepted in the community. Currently Scheme is being split into a lean minimal base, now ratified as
+[R7RS-small](http://trac.sacrideo.us/wg/raw-attachment/wiki/WikiStart/r7rs.pdf)
+([errata](http://trac.sacrideo.us/wg/wiki/R7RSSmallErrata)),
+and a richer language
+[R7RS-large](http://www.scheme-reports.org/2015/working-group-2.html)
+(still being designed) that standardizes many add-ons.
+
+* [Scheme FAQ](http://community.schemewiki.org/?scheme-faq)
+* [Scheme Requests for Implementation](http://srfi.schemers.org/) (SRFIs)
+
+
+<!-- -->
+* [The Scheme Programming Language](http://scheme.com/tspl4/)/4ed, by R. Kent Dybvig ([errata](http://scheme.com/tspl4-errata.html))
+* [Structure and Interpretation of Computer Programs](http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-4.html)/2ed (SICP)
+* [Programming Languages: Application and Interpretation](http://cs.brown.edu/courses/cs173/2012/book/)/2ed
+
+<!-- -->
+* [The Adventures of a Pythonista in Schemeland](http://www.phyast.pitt.edu/~micheles/scheme/index.html)
+* [Comparing Chicken to C, Python, and Perl](http://wiki.call-cc.org/language-comparison)
+* [Chicken for Pythonistas](http://wiki.call-cc.org/chicken-for-python-programmers)
+* [Haskell vs Scheme](http://www.reddit.com/r/programming/comments/nq1k/haskell_and_scheme_which_one_and_why/)
+
+<!-- -->
+* Chicken [Tips and tricks](http://wiki.call-cc.org/tips%20and%20tricks)
+* The [Schematics Scheme Cookbook](http://schemecookbook.org/) is a collaborative effort to produce documentation and recipes for using Scheme for common tasks.
+* [Stack Overflow](http://stackoverflow.com/questions/tagged/scheme?sort=faq) questions tagged "scheme"
+* [Scheme Wiki](http://community.schemewiki.org/)
+* [Documents at Schemers.org](http://www.schemers.org/Documents/)
-Initial Tutorials
-=================
-* [[!wikipedia Scheme (programming language) desc="Wikipedia overview of Scheme"]]
-If you are new to programming or if you have the patience to do so, you should work through a textbook.
-* A warmly-recommended introduction available online is [Teach Yourself Scheme in Fixnum Days](http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html) This is a short introductory text that introduces common Scheme techniques.
-* The Little Schemer book(s) we recommended for the seminar are good introductions, requiring some more commitment.
-
-+ [How to Design Programs](http://www.htdp.org/2003-09-26/), by Matthias Felleisen, et al., is another good choice, which the Racket groups recommends. Whenever the book says "Scheme," you can read it as "Racket."
-
-
-If you're already a programmer and you're in more of a hurry, you could instead look at:
-
-* the [Quick Introduction to Racket](http://docs.racket-lang.org/quick/index.html). This tutorial provides a brief introduction to the Racket programming language by using DrRacket and one of Racket's picture-drawing libraries.
-
-* [An Introduction to Lambda Calculus and Scheme](http://www.jetcafe.org/~jim/lambda.html) is also aimed at programmers.
-
-More details
-============
-
-* After any of the preceding, you could move on to [Racket Guide](http://docs.racket-lang.org/guide/index.html). This starts with a tutorial on Racket basics; then it describes the rest of the Racket language. This guide is intended for programmers who are new to Racket or new to some part of Racket. It assumes programming experience, so if you are new to programming, you should instead start with one of the textbooks listed above. This Guide describes parts of the Racket language which go beyond the learning-oriented fragments of How to Design Programs.
-
-Even more details
-=================
-
-* The [Complete Racket Reference Manual](http://docs.racket-lang.org/reference/index.html) defines the core Racket language and describes its most prominent libraries. The Racket Guide is friendlier; though less precise and less complete.
+<!--
+Scheme is a very small language which is based on Lisp, the oldest of functional programming languages. Scheme's main advantages are elegance (the entire language can be built on top of a handful of primitive list manipulating operations), and the enormous corpus of educational material which has been created for it. As such, Scheme is the perfect place to start learning the techniques of functional abstraction. If you decide to study Scheme, you should make sure you that your path through the available material brings you into contact with all of the following (in no particular order):
-* The Scheme language is standardized; the various implementations of the
-language usually adhere to what's published in the current standard and add on
-different handy extensions. The first standard was published in 1975. A
-revision was published in 1978 called "The revised report on Scheme, a
-dialect of Lisp." Thereafter, revisions of the standard were titled "The
-Revised Revised Report..." and so on, or "The Revised^n Report..." for
-short. One widely implemented standard is [The
-Revised^5 Report on Scheme](http://www.schemers.org/Documents/Standards/R5RS/HTML/),
-or R5RS, published in 1998.
-A new standard [R6RS](http://www.r6rs.org/final/html/r6rs/r6rs.html) ([Libraries for R6RS](http://www.r6rs.org/final/html/r6rs-lib/r6rs-lib.html))
-was ratified in 2007, and this is implemented in Racket; but it also has many detractors and has not been fully
-accepted in the community. As a result, the Scheme language [may in the future split](http://scheme-reports.org/2009/position-statement.html)
-into a lean, minimal base, closer to
-R5RS Scheme, and a richer language like R6RS Scheme that standardizes many of the add-ons that programmers tend to build
-on top of the base.
+ recursion (vs. iteration)
+ bottom-up design
+ first-class functions <http://steve-yegge.blogspot.com/2006/03/execution-in-kingdom-of-nouns.html>
+ lambda functions
+ closures
+ continuations
+ macros
-* [Scheme FAQ](http://community.schemewiki.org/?scheme-faq)
+An excellent place to start is the book: Structure and Interpretation of Computer Programs (considered by some the "bible" of functional programming, which may give a false implication as to its breadth, despite it being a very good book). There are also countless other great books and websites which have been published to answer questions on how to learn Lisp, why to learn Lisp, etc., so searching the web will most certainly be worth your time.
+-->
<!--
-* [Scheme Requests for Implementation](http://srfi.schemers.org/) (SRFI)
-* The [Schematics Scheme Cookbook](http://schemecookbook.org/) is a collaborative effort to produce documentation and recipes for using Scheme for common tasks.
+[Racket and vim](http://docs.racket-lang.org/guide/Vim.html)
+[Chicken and vim](http://wiki.call-cc.org/vim)
-->