* [Teach Yourself Scheme in Fixnum Days](http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html)
###Scratch
* [Computer Science Concepts in Scratch](http://stwww.weizmann.ac.il/g-cs/scratch/scratch_en.html)
###Sed
* [Sed - An Introduction and Tutorial](http://www.grymoire.com/Unix/Sed.html)
###Smalltalk
* [Computer Programming using GNU Smalltalk](http://www.canol.info/books/computer_programming_using_gnu_smalltalk) (PDF)
* [Dynamic Web Development with Seaside](http://book.seaside.st/book/table-of-contents)
@ -960,6 +964,7 @@ See also [TeX](#tex)
* [Use The Index, Luke!: A Guide To SQL Database Performance](http://use-the-index-luke.com/)
* [Learn SQL The Hard Way](http://sql.learncodethehardway.org/)
###SQL Server
* [Introducing Microsoft SQL Server 2008 R2](http://social.technet.microsoft.com/wiki/contents/articles/11608.e-book-gallery-for-microsoft-technologies.aspx#IntroducingMicrosoftSQLServer2008R2)
* [Introducing Microsoft SQL Server 2012](http://social.technet.microsoft.com/wiki/contents/articles/11608.e-book-gallery-for-microsoft-technologies.aspx#IntroducingMicrosoftSQLServer2012)
@ -997,6 +1002,7 @@ See also [TeX](#tex)
See also [LaTeX](#latex)
###Theory
* [Networks, Crowds, and Markets: Reasoning About a Highly Connected World](http://www.cs.cornell.edu/home/kleinber/networks-book/)
* [Homotopy Type Theory: Univalent Foundations of Mathematics](http://homotopytypetheory.org/book/) (PDF)
* [Backbone.js and socket.io](http://developer.teradata.com/blog/jasonstrimpel/2011/11/backbone-js-and-socket-io)
* [Backbone.js + Require.js, Modularization and Just in Time Dependency Loading, part 1](http://developer.teradata.com/blog/jasonstrimpel/2011/12/part-1-backbone-js-require-js) [part 2](http://developer.teradata.com/blog/jasonstrimpel/2012/01/part-2-backbone-js-require-js-further-modularization-and-just-in-time-dep)
* [Getting Started with Backbone.js](http://net.tutsplus.com/tutorials/javascript-ajax/getting-started-with-backbone-js/)
* [How to share Backbone.js models with node.js](http://amirmalik.net/2010/11/27/how-to-share-backbonejs-models-with-nodejs)
## D3.js
* [Interactive Data Visualization for the Web](http://chimera.labs.oreilly.com/books/1230000000345/index.html)