Hello,
this is my first Project, but i want start with a 3D Game! So what Genre do you recommend me?

Thanks

fps

and dont start white multieplayer
you always can start from scratch and make a multie player game

Start with something very simple like pong or pacman.
Just try to keep them simple and clean and then you can add features if you want to or just start with something more complex.

And if you haven´t done it yet, read a lot of tutorials. I read tutorials for about a half year until I was able to really script something on my own, but the many tutorials I read at that are still helping me cause I got to know a lot of ways to get things done and am know able to write (at least that is my opinion) some simple and selfexplaining scripts.
And if you don´t do it yet, use the manual all the time and if you look up something, also look at all the similar stuff to get to know everything.
I nearly never know how to use a function but I know its name and how to find it in the manual.

yep, starting with something simple.
MP, RTS or something are really hard to realize and you will just get frustrated by coding them first.

But I don't agree with Slin 100%. On my side I leared the script just by writing it. I never did really a tutorial about it. Just read in the (a5-)manual. I took the template scrips and started direct (2nd day after I got GS) by adding lines and look why it didn't work