Recently, I got into native Android development.
While digging around for information, I stumbled upon this online course.
It is a recording of 5 class sessions, each session is 4 recordings.
I am only half way through it but so far It is informative, extensive and all-round a good course.
It's only disadvantage is that it is a video recording so it's hard (read impossible) to skim through it as you would skim a book.
Oh, almost forgot the link :)