diff --git a/free-programming-books.md b/free-programming-books.md
index 414a9bc7b220e060bbfbef6f0fff1df0fc177cb4..b5b1a35eec2b8cdcfa6ea4041c8205811f5467e4 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -342,6 +342,7 @@
 * [How to Think Like a Computer Scientist](http://openbookproject.net/thinkcs/) -  Peter Wentworth, Jeffrey Elkner, Allen B. Downey, and Chris Meyers
 * [I Am a Bug](http://www.amibug.com/iamabug/p01.html)
 * [Learn to Program](http://pine.fm/LearnToProgram/)
+* [Learning 30 Technologies in 30 Days: A Developer Challenge](https://www.openshift.com/blogs/learning-30-technologies-in-30-days-a-developer-challenge) - Shekhar Gulati
 * [Linked Data Patterns: A pattern catalogue for modelling, publishing, and consuming Linked Data](http://patterns.dataincubator.org/book/) - Leigh Dodds, Ian Davis
 * [Magic Ink: Information Software and The Graphical Interface](http://worrydream.com/#!/MagicInk) by Bret Victor
 * [Modeling Reactive Systems with Statecharts](http://www.scribd.com/doc/167971960/Modeling-Reactive-Systems-With-Statecharts)
@@ -1365,6 +1366,7 @@ See also [TeX](#tex)
 ###Scala
 * [A Scala Tutorial for Java programmers](http://www.scala-lang.org/docu/files/ScalaTutorial.pdf) (PDF)
 * [Another tour of Scala](http://naildrivin5.com/scalatour)
+* [EAI Patterns with Actor Model](https://github.com/alexanderfefelov/eai-patterns-with-actor-model) - Vaughn Vernon
 * [Effective Scala](http://twitter.github.com/effectivescala/)
 * [Pro Scala: Monadic Design Patterns for the Web](http://github.com/leithaus/XTrace/tree/monadic/src/main/book/content/)
 * [Program Transformation in Scala](http://homepages.cwi.nl/~ai/MScThesis-A-Izmaylova.pdf) - Anastasia Izmaylova
@@ -1373,6 +1375,7 @@ See also [TeX](#tex)
 * [Scala By Example](http://www.scala-lang.org/docu/files/ScalaByExample.pdf) (PDF)
 * [Scala Cookbook: Bonus Chapters](http://examples.oreilly.com/9781449339616-files/Scala_Cookbook_bonus_chapters.pdf) - Alvin Alexander
 * [Scala & Design Patterns: Exploring Language Expressivity](http://www.scala-lang.org/old/sites/default/files/FrederikThesis.pdf) - Fredrik Skeel Løkke
+* [Scala for Perl 5 Programmers](https://github.com/garu/scala-for-perl5-programmers) - Breno G. de Oliveira
 * [Scala for the Impatient (A1 Scala Level chapters)](http://typesafe.com/resources/book/scala-for-the-impatient) - Cay S. Horstmann
 * [Scala School by Twitter](http://twitter.github.io/scala_school/)
 * [Scala Tutorial](http://www.tutorialspoint.com/scala/scala_tutorial.pdf)