diff --git a/free-programming-books.md b/free-programming-books.md
index 934fc11d..397bd1f3 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -198,6 +198,7 @@
 * [Learneroo Resources to Learn Programming](https://www.learneroo.com/modules/12/nodes/96)
 * [Learn X in Y minutes](http://learnxinyminutes.com/)
 * [Microsoft Press: Free E-Books](http://blogs.msdn.com/b/microsoft_press/archive/2011/03/03/ebooks-list-of-our-free-books.aspx)
+* [Microsoft Guides to Software](http://blogs.msdn.com/b/mssmallbiz/archive/2014/07/07/largest-collection-of-free-microsoft-ebooks-ever-including-windows-8-1-windows-8-windows-7-office-2013-office-365-office-2010-sharepoint-2013-dynamics-crm-powershell-exchange-server-lync-2013-system-center-azure-cloud-sql.aspx)
 * [Microsoft Technologies 1, including books on Windows Azure, SharePoint, Visual Studio Guide, Windows phone development, ASP.net, Office365, etc. collection by Eric Ligman](http://blogs.msdn.com/b/mssmallbiz/archive/2012/07/27/large-collection-of-free-microsoft-ebooks-for-you-including-sharepoint-visual-studio-windows-phone-windows-8-office-365-office-2010-sql-server-2012-azure-and-more.aspx)
 * [Microsoft Technologies 2, including books on Windows Azure, SharePoint, Visual Studio Guide, Windows phone development, ASP.net, etc. collection by Eric Ligman](http://blogs.msdn.com/b/mssmallbiz/archive/2012/07/30/another-large-collection-of-free-microsoft-ebooks-and-resource-kits-for-you-including-sharepoint-2013-office-2013-office-365-duet-2-0-azure-cloud-windows-phone-lync-dynamics-crm-and-more.aspx?wa=wsignin1.0)
 * [MindView Inc](http://www.mindviewinc.com/Books/)
@@ -724,6 +725,7 @@
 * [C++ Cookbook](http://staff.ppu.edu/dkhalid/O'Reilly%20-%20C++%20Cookbook%20%282007%29.pdf) (PDF)
 * [C++ GUI Programming With Qt 3](http://www.computer-books.us/cpp_0010.php)
 * [C++ Succinctly, Syncfusion](http://www.syncfusion.com/resources/techportal/ebooks/cplusplus) (PDF, Kindle) *(Just fill the fields with any values)*
+* [C++ Tricks](http://www.bordoon.com/cplusplus/book_wrapper.html)
 * [CS106X Programming Abstractions in C++](http://www.stanford.edu/class/cs106x/)
 * [Data Structures and Algorithms with Object-Oriented Design Patterns in C++](http://www.brpreiss.com/books/opus4/index.html)
 * [Financial Numerical Recipes in C++](http://finance.bi.no/~bernt/gcc_prog/recipes/) - Bernt Arne Ødegaard
@@ -1047,6 +1049,7 @@
 * [Java Thin-Client Programming](http://www.redbooks.ibm.com/redbooks/SG245118.html)
 * [Java: A Beginner's Guide](http://www.oracle.com/events/global/en/java-outreach/resources/java-a-beginners-guide-1720064.pdf) - Oracle
 * [Learning Java (4th Edition)](http://chimera.labs.oreilly.com/books/1234000001805/index.html) - Patrick Niemeyer
+* [NIO Framework](http://nioframework.sourceforge.net/NIO_Paper.pdf)
 * [OOP - Learn Object Oriented Thinking & Programming](http://pub.bruckner.cz/titles/oop) - Rudolf Pecinovsky
 * [Open Data Structures (in Java)](http://opendatastructures.org/ods-java.pdf) (PDF)
 * [OSGi in Practice](http://njbartlett.name/files/osgibook_preview_20091217.pdf) (PDF)
diff --git a/problem-sets-competitive-programming.md b/problem-sets-competitive-programming.md
index 3d5acba6..cc9859a3 100644
--- a/problem-sets-competitive-programming.md
+++ b/problem-sets-competitive-programming.md
@@ -32,6 +32,7 @@
 * [Mathproblem of the Month - Bilkent University](http://www.fen.bilkent.edu.tr/~cvmath/prob-month.html)
 * [PKU Online Judge](http://poj.org/)
 * [Ponder This!](http://domino.research.ibm.com/Comm/wwwr_ponder.nsf/pages/index.html)
+* [ProblemBook.NET](http://problembook.net/content/en/index.html)
 * [Project Euler](https://projecteuler.net/)
 * [Python Practice Projects](http://pythonpracticeprojects.com/)
 * [Sphere Online Judge](http://www.spoj.com/)