This app was mentioned in 4 comments, with an average of 1.00 upvote
I need a refresher as well. thanks. I have an app i recently installed from when Amazon used to actually release free apps of the day. I like the interactive tutorial.not sure what it actully costs but worth a look https://play.google.com/store/apps/details?id=com.aksharastudios.eop
Check out this application https://play.google.com/store/apps/details?id=com.aksharastudios.eop
Check out this app: https://play.google.com/store/apps/details?id=com.aksharastudios.eop
This might offer some tips. It helped my skills with the camera https://play.google.com/store/apps/details?id=com.aksharastudios.eop