Maybe it’s a little late for this post : Getting started with 2D game development
Actually, it’s not late at all 
After I made that post, I was busy translating jMe3GL2’s documentation and code commentaries from Spanish to English and only now I’m gonna proceed with my game project.
So… Thank you for the tutorial, it sure will be useful!
PS: By the way, I invite you to read my new post if you’re interested:
jMe3GL2 but it’s translated to English - User Code & Projects - jMonkeyEngine Hub