Update free-programming-books.md (#4461)

Co-authored-by: Eric Hellman <eric@hellman.net>

free-programming-books.md

@@ -933,13 +933,14 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Android 4 App Development Essentials](http://www.techotopia.com/index.php/Android_4_App_Development_Essentials)
 * [Android Notes for Professionals](https://goalkicker.com/AndroidBook) - Compiled from StackOverflow Documentation (PDF)
 * [Android Programming Succinctly, Syncfusion](https://www.syncfusion.com/resources/techportal/ebooks/android) ([PDF](https://www.syncfusion.com/Account/Logon?ReturnUrl=%2fresources%2ftechportal%2febooks%2fandroid), [Kindle](https://www.syncfusion.com/Account/Logon?ReturnUrl=%2fresources%2ftechportal%2febooks%2fandroid)) (email address *requested*, not required)
+* [Android Tutorial](http://www.tutorialspoint.com/android) - Tutorials Point
+* [Codelabs for Advanced Android Development](https://developer.android.com/courses/advanced-training/toc)
 * [CodePath Android Cliffnotes](https://github.com/codepath/android_guides/wiki)
 * [Coreservlets Android Programming Tutorial](http://www.coreservlets.com/android-tutorial/)
 * [Expert Android and Eclipse development knowledge](http://www.vogella.com/tutorials/android.html)
 * [Google Android Developer Training](https://developer.android.com/guide)
 * [Styling Android](https://blog.stylingandroid.com)
 * [The Busy Coder's Guide to Android Development](https://commonsware.com/Android/4-2-free) (PDF - older versions)
-* [Tutorial Point Android Tutorial](http://www.tutorialspoint.com/android) - Tutorials Point
 
 
 ### APL