i knew nothing about motors before i bought my first kit.. and through the steps of building, riding and fixing i have learned alot in a short time. im not trying to take this hobby lightly. but its not hard to figure out with some good old common sense. and all the good reading on this forum.
this is a good place to start to learn about motors.. there small, cheep and alot of fun. they are not to hard to fix on your own. parts are also cheep and plentiful. and if i can build them im betting almost anyone that really wants to can do it.
i say give the kit a try and have fun with it... good luck, dont give up. keep asking questions and read as much as you can when your not riding or fixing your ride.