Coursera's Android development series will start next September 26th
The new offering of Coursera's Programming Mobile for Android Handheld Systems will start next September 26th. I followed the first offering and it did help me
It is part of a series of 3 courses, whose first offering was really interesting and touched on topics which are useful not only for Android development (multithreading, design patterns, Spring framework, HTTP, OAuth2.0, etc...).
And if you don't want a verified certificate... it's free