1.) How old are you?
2.) Link me to the site of the lessons. Ive been racing for years, and you also might want to drop this post in the karting thread. We will all help you out from there.
EDIT: And for Hawkeye, If I cant make it as a driver, I want to be an engineer on a crew too. Im currently in Engineering classes. Take some engineering classes. And do you live in England? Because I could link you to a good college that many students have gone off to work at Mclaren, BMW, Ferrari, Audi, Chevy, Ford, etc. In F1, GT, WTCC, BTCC, Formula Ford, Karts, LMP, etc. You will most likely want to start at a lower level series as a mecahnic like Kating. Go to a local kart track and see how its done. Apply for a karting job at a shop when you get good. I work on my own kart, there not much to them.