diff --git a/free-programming-books.md b/free-programming-books.md
index a93cf47ce..aac5b5252 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -358,6 +358,12 @@
 * [Practical and Theoretical Aspects of Compiler Construction](http://web.stanford.edu/class/archive/cs/cs143/cs143.1128/) (class lectures and slides)
 
 
+####Computer Science
+
+* [Computer Science I - Draft](https://bitbucket.org/chrisbourke/computersciencei/src) - Dr. Chris Bourke (PDF) (:construction: *in process*)
+* [Computer Science II - Draft](http://cse.unl.edu/~cbourke/ComputerScienceTwo.pdf) - Dr. Chris Bourke (PDF) (:construction: *in process*)
+
+
 #### Computer Vision
 
 * [Computer Vision](http://homepages.inf.ed.ac.uk/rbf/BOOKS/BANDB/bandb.htm) - Dana Ballard, Chris Brown
@@ -484,6 +490,7 @@
 * [2016 European Software Development Salary Survey](http://www.oreilly.com/programming/free/2016-european-software-development-salary-survey.csp) (email address *requested*, not required)
 * [2016 Software Development Salary Survey](http://www.oreilly.com/programming/free/2016-software-development-salary-survey-report.csp) (email address *requested*, not required)
 * [97 Things Every Programmer Should Know - Extended](https://leanpub.com/97-Things-Every-Programmer-Should-Know-Extended) *(Leanpub account or valid email requested)*
+* [A MACHINE MADE THIS BOOK ten sketches of computer science](http://ocaml-book.com/s/popbook.pdf) - JOHN WHITINGTON (PDF)
 * [A Mathematical Theory of Communication](https://archive.org/details/bstj27-4-623) - Claude E.Shannon
 * [Ansible Up & Running (first three chapters)](https://www.ansible.com/ebooks) *(account required)*
 * [Asterisk™: The Definitive Guide](http://solmu.org/pub/help/Asterisk/3nd_Edition_for_Asterisk_1.8)
@@ -1213,6 +1220,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Git Workflows](http://documentup.com/skwp/git-workflows-book)
 * [GitHub Cheat Sheet](https://github.com/tiimgreen/github-cheat-sheet) - Tim Green (Markdown)
 * [Intoduction to Git and Github](https://launchschool.com/books/git) - Launch School
+* [Intoduction to Git and Github - Tutorial](http://cse.unl.edu/~cbourke/gitTutorial.pdf) - Dr. Chris Bourke (PDF)
 * [Learn Enough Git to be Dangerous](https://www.learnenough.com/git-tutorial) - Michael Hartl
 * [Learn Git - Learn Version Control with Git](http://www.git-tower.com/learn/git/ebook/command-line/introduction) - Tobias Günther
 * [Pro Git](http://git-scm.com/book/en/v2) - Scott Chacon
@@ -1414,7 +1422,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Object-Oriented Programming in JavaTM Textbook](http://computing.southern.edu/halterman/OOPJ/) - Rick Halterman (PDF per Chapter)
 * [Object Oriented Programming using Java](https://bookboon.com/en/object-oriented-programming-using-java-ebook) - Simon Kendal (PDF) , Bookboon. (email address *requested*, not required)
 * [Object-Oriented vs. Functional Programming](http://www.oreilly.com/programming/free/object-oriented-vs-functional-programming.csp) - Richard Warburton (email address *requested*, not required)
-* [OOP - Learn Object Oriented Thinking & Programming](http://pub.bruckner.cz/titles/oop) - Rudolf Pecinovsky
+* [OOP - Learn Object Oriented Thinking & Programming](http://pub.bruckner.cz/titles/oop) - Rudolf Pecinovsky (PDF)
 * [Open Data Structures (in Java)](http://opendatastructures.org/ods-java.pdf) - Pat Morin (PDF)
 * [Processing XML with Java (A Guide to SAX, DOM, JDOM, JAXP, and TrAX) (2002)](http://www.cafeconleche.org/books/xmljava/) - Elliotte Rusty Harold
 * [The ABC of PDF with iText: PDF Syntax essentials](https://leanpub.com/itext_pdfabc) - Bruno Lowagie  *(Leanpub account or valid email requested)*