Rammstein is asking for information on carting, not how to get competitive with his own equipment. He is going to an indoor carting place where you can run their carts, rented suit, rented helmet - all included. In my neck of the woods it is about $70 an hour. That is MUCH cheaper than taking my 993 to the track - per hour seat time.
You can have a lot of fun this way and compete against the other dorks on the track in all stock carts. I have done a few "social" events with people from work and it was a hoot. These places track your times and you can have real races.
That all said, I do not know where to read. If you have the basics from autocross or track driving, you should be able to apply it to carting. Just practise. You'll learn what you can do in a cart and what you can not do. I had to learn that you can do a lot with them which would get you in trouble with a car. One other thing is that you can drive it 100% - there is no real chance to get hurt if you go off ...
George