welcome 2 the community.

here are ur answers:

1. Yes. GameStudio is fun. U can learn at very fast pace. Tutorials and workshops are clear and easy. Templates are there to help u build fast prototypes.

2. Yes. If u can make 3D, then 2D is also possible.

3. For the scripts.. go for the workshop and tutorials. it starts with the basic Helloworld to more complex ones.

4. Get into the stuff.. and u never gonna leave from here !

Cheers !