* [Tutorials for modern OpenGL](http://www.opengl-tutorial.org/)
* [OpenGL](http://www.songho.ca/opengl/index.html): Concepts and illustrations.
### Graphical User Interfaces
@ -262,6 +262,7 @@ Original Source: [Free Programming books](http://stackoverflow.com/revisions/392
* [Data Structures Succinctly Part 2, Syncfusion](http://www.syncfusion.com/resources/techportal/ebooks/datastructurespart2) (PDF, Kindle) *(Just fill the fields with any values)*
* [Elementary Algorithms](https://github.com/liuxinyu95/AlgoXY) - Larry LIU Xinyu
* [Foundations of Computer Science](http://infolab.stanford.edu/~ullman/focs.html) - Al Aho and Jeff Ullman
* [Handbook of Graph Drawing and Visualization](https://cs.brown.edu/~rt/gdhandbook/)
* [Open Data Structures: An Introduction](http://www.aupress.ca/index.php/books/120226) - Pat Morin
* [LEDA: A Platform for Combinatorial and Geometric Computing](http://www.mpi-inf.mpg.de/~mehlhorn/LEDAbook.html)
* [Lectures Notes on Algorithm Analysis and Computational Complexity (Fourth Edition)](http://larc.unt.edu/ian/books/free/lnoa.pdf), University of North Texas (PDF)
@ -278,7 +279,7 @@ Original Source: [Free Programming books](http://stackoverflow.com/revisions/392
* [The Design of Approximation Algorithms](http://www.designofapproxalgs.com/book.pdf) (PDF)
* [The Great Tree List Recursion Problem](http://cslibrary.stanford.edu/109/TreeListRecursion.pdf) (PDF)
* [Architectural Styles and the Design of Network-based Software Architectures](http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm) - Roy Thomas Fielding
@ -760,16 +761,17 @@ Original Source: [Free Programming books](http://stackoverflow.com/revisions/392
* [Learn C the hard way](http://c.learncodethehardway.org/book/)
* [Open Data Structures (In C++)](http://opendatastructures.org/ods-cpp.pdf) (PDF)
@ -801,15 +804,17 @@ Original Source: [Free Programming books](http://stackoverflow.com/revisions/392
* [The Rook's Guide to C++](http://rooksguide.org/2013/11/26/version-1-0-is-out/) (PDF)
* [Thinking in C++, Second Edition, Vol. 1.](http://www.mindviewinc.com/downloads/TICPP-2nd-ed-Vol-one.zip) [(Vol. 2)](http://www.mindviewinc.com/downloads/TICPP-2nd-ed-Vol-two.zip) - Bruce Eckel
* Also see: [The Definitive C++ Book Guide and List](http://stackoverflow.com/q/388242/511601)
* [Joint Strike Fighter, C++ Coding Standards, by Bjarne Stroustrup](http://www.stroustrup.com/JSF-AV-rules.pdf)