totologic (./13) :
It would be useful to know your experience.

Before trying to make a Neo Geo game, do you have experience in making game on any other platform ? Or even experience in making apps ? Or even programming at school or university ?

I would not recommend Neo Geo platform for dev beginners, as it can be very frustrating. Making a game is very hard, you need to master programming, game design, graphics. With the Neo Geo you also have to master the limitations of the hardware. That's a lot of things.

If you successed to install a C compiler, just go and don't try to be always up to date with the lastest groovy library. Just keep things simple, try to display your first sprite and have fun.

Never programmed anything.
I tried NGDK because it seemed simpler at first, but when I fired up CB for the first time I knew this wasn't for me.