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* [Getting Started with Arduino products](https://www.arduino.cc/en/Guide) - Official Arduino Documentation (:construction: *in process*)
* [Introduction to Arduino](http://playground.arduino.cc/Main/ManualsAndCurriculum)
* [Introduction to Arduino : A piece of cake!](http://www.introtoarduino.com) - Alan G. Smith
* [Open softwear - Fashionable prototyping and wearable computing using the Arduino](https://openlibra.com/en/book/download/open-softwear-fashionable-prototyping-and-wearable-computing-using-the-arduino) - Tony Olsson, David Gaetano, Jonas Odhner, Samson Wiklund (PDF)
* [Open softwear - Fashionable prototyping and wearable computing using the Arduino](https://softwear.cc/book/files/Open_Softwear-beta090712.pdf) - Tony Olsson, David Gaetano, Jonas Odhner, Samson Wiklund (PDF)
### ASP.NET
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* [Bash tutorial](https://web.archive.org/web/20180328183806/http://gdrcorelec.ups-tlse.fr/files/bash.pdf) - Anthony Scemama (PDF)
* [Google Shell Style Guide](https://google.github.io/styleguide/shell.xml) - Paul Armstrong (HTML)
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* [256-Color VGA Programming in C](http://www.brackeen.com/vga/) - David Brackeen
* [A Tutorial on Pointers and Arrays in C](https://web.archive.org/web/20180827131006/http://home.earthlink.net/~momotuk/pointers.pdf) - Ted Jensen (PDF)
* [An Introduction to C & GUI Programming](https://www.raspberrypi.org/magpi-issues/C_GUI_Programming.pdf) - Simon Long (PDF)
* [An Introduction to C & GUI Programming](https://archive.org/details/CGUIProgramming/mode/2up) - Simon Long (PDF)
* [Bare-metal programming for ARM](https://github.com/umanovskis/baremetal-arm) - Daniels Umanovskis [(PDF)](http://umanovskis.se/files/arm-baremetal-ebook.pdf)
* [Beej's Guide to C Programming](http://beej.us/guide/bgc/) - B. Hall (HTML, PDF)
* [Beej's Guide to Network Programming - Using Internet Sockets](http://beej.us/guide/bgnet/) - B. Hall
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* [Everything you need to know about pointers in C - Peter Hosey](http://boredzo.org/pointers/)
* [Functional C (1997)](https://research.utwente.nl/files/5128727/book.pdf) - Pieter H. Hartel, Henk Muller (PDF)
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### F Sharp
* [Analyzing and Visualizing Data with F#](https://www.oreilly.com/programming/free/files/analyzing-visualizing-data-f-sharp.pdf) (PDF)
* [Analyzing and Visualizing Data with F#](https://web.archive.org/web/20201023042804/https://www.oreilly.com/programming/free/files/analyzing-visualizing-data-f-sharp.pdf) - Tomas Petricek (PDF)
* [F# for fun and profit](https://www.gitbook.com/book/swlaschin/fsharpforfunandprofit/details) (ePub)
* [Git Workflows](https://web.archive.org/web/20210910133251/http://documentup.com/skwp/git-workflows-book) - Yan Pritzker
* [Happy Git and GitHub for the useR](https://happygitwithr.com) - Jenny Bryan
* [How to Collaborate on Github](https://github.com/eonist/How-to-collaborate-on-github) - André J
* [Introduction to Git and Github](https://launchschool.com/books/git) - Launch School
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#### Grails
* [Getting Started with Grails](http://www.infoq.com/minibooks/grails-getting-started)
* [Grails Tutorial for Beginners](http://grails.asia/grails-tutorial-for-beginners/)
* [Grails Tutorial for Beginners](https://web.archive.org/web/20210519053040/http://grails.asia/grails-tutorial-for-beginners/)
* [The Grails Framework - Reference Documentation](http://grails.github.io/grails-doc/latest/) - Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari ([PDF](http://grails.github.io/grails-doc/latest/guide/single.pdf))
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* [Artificial Intelligence - Foundations of Computational Agents, Second Edition](https://artint.info/2e/html/ArtInt2e.html) - David L. Poole and Alan K. Mackworth
* [Building Back-End Web Apps with Java, JPA and JSF](https://web-engineering.info/tech/JavaJpaJsf/book/) - Mircea Diaconescu, Gerd Wagner (HTML,PDF)
* [Category wise tutorials - J2EE](https://www.mkyong.com/all-tutorials-on-mkyong-com/) - Yong Mook Kim
* [Core Servlets and JavaServer Pages, 2nd Ed. (2003)](http://pdf.coreservlets.com) - Marty Hall and Larry Brown
* [Core Servlets and JavaServer Pages, 2nd Ed. (2003)](https://web.archive.org/web/20210126062450/http://pdf.coreservlets.com/) - Marty Hall and Larry Brown
* [Data Structures in Java for the Principled Programmer (2007)](https://web.archive.org/web/20190302130416/http://dept.cs.williams.edu/~bailey/JavaStructures/Book_files/JavaStructures.pdf) - Duane A. Bailey (PDF)
* [Learn Python Programming, Second Edition](https://www.packtpub.com/free-ebooks/learn-python-programming-second-edition) - Fabrizio Romano (Packt account *required*)
* [Learn Python the Right Way](https://learnpythontherightway.com)
* [Learn to Program Using Python](https://www.ida.liu.se/~732A47/literature/PythonBook.pdf) - Cody Jackson (PDF)
* [Learn to Program Using Python](https://web.archive.org/web/20201224032210/https://www.ida.liu.se/~732A47/literature/PythonBook.pdf) - Cody Jackson (PDF)
* [Learning to Program](http://www.alan-g.me.uk)
* [Lectures on scientific computing with python](https://github.com/jrjohansson/scientific-python-lectures) - J.R. Johansson (2.7)
* [Making Games with Python & Pygame](https://inventwithpython.com/pygame/chapters/) - Al Sweigart (3.2)
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* [Python Tutorial](https://www.tutorialspoint.com/python) - Tutorials Point
* [The Official Raspberry Pi Project Book](https://www.raspberrypi.org/magpi-issues/Projects_Book_v1.pdf) (PDF)
* [The Official Raspberry Pi Project Book](https://web.archive.org/web/20210725063023/https://www.raspberrypi.org/magpi-issues/Projects_Book_v1.pdf) (PDF)
### REBOL
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* [The Little Book Of Ruby](http://www.sapphiresteel.com/ruby-programming/The-Little-Book-Of-Ruby.html) - Huw Collingbourne
* [The Ruby Reference](https://rubyreferences.github.io/rubyref/) - Victor Shepelev
* [Using Blocks in Ruby](https://www.oreilly.com/programming/free/files/using-blocks-in-ruby.pdf) - Jay McGavren (PDF)
* [Using Blocks in Ruby](https://web.archive.org/web/20201027171026/https://www.oreilly.com/programming/free/files/using-blocks-in-ruby.pdf) - Jay McGavren (PDF)
* [Why's (Poignant) Guide to Ruby](http://poignant.guide)
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