Android App Development Tutorials

I came across a very helpful series of tutorials by a YouTube channel called thenewboston. I thought the series was 20 parts long, but I must have read it wrong because it's actually 200 parts, though not all of theses videos contain information that I need.

For example, in tutorial number 41, there is a finished application using the function of the phone's camera. I feel I need to get to this point before I go any further -

Video: http://youtu.be/I9ldAcnx_jc?t=4m25s

Also there are some handy tutorials on the Andriod Developer website itself - http://developer.android.com/reference/android/hardware/Camera.html