Thanks I've already looked at your artillery tutorial but since that was over my level too I didn't get it too much
The artillery tutorial is not really complicated IMHO. What is your programming experience so far?

As you said, it is best to start things as simple as possible. Even after a lot of years of programming, I still underestimate many projects. Just take your time to learn SDL. Have a look at some examples/open-source-games and you'll learn alot.