Learning Android Using Online Tutorials and Resources - A Comparison

I consulted the following resources to learn Android -

1. Udemy Learn By Doing Android
2. Lynda: Android SDK Local Data Storage
3. Lynda: Connecting Android Apps to RESTful Webservices
4. Vogella Android Text Tutorials
5. Google Android Developer Training
6. SlideNerd: Fragments in Android

I came up with a quick coverage matrix of each of the courses and how they fare covering various topics -

Areas	Udemy	Lynda Data	Lynda RESTful	Vogella	Google Android	SlideNerd
UI	Y	-	-	Y	Y	-
Animation	N	-	-	Y	Y	-
Fragments	N	-	-	Y	Y	Y
Activity	Y	-	-	Y	Y	Y
Services	Y	-	-	Y	Y	-
Debugging	Y	-	-	-	-	-
Database	N	Y	-	Y	-	-
Networking	N	-	Y	-	-	-
Multithreading	N	-	Y	-	-	-

The above table can be interpreted using -
Y = Sufficiently covered
Y = Sparsely covered
N = Expected but not present
- = Not Applicable

I will follow up with details of each of the tutorial, strength, weakness and suitability. Kindly leave your comments on how I can enhance the above matrix, including additional areas and trying out other tutorials.