Solo I and II is a good way to start racing.
But you should 1st see if you really enjoy it, go to a couple of driving schools (many car club have them, the BMW Club of Canada has a reputable one) and get some proper instruction. Lapping days are nice but you keep perfecting your mistakes instead of learning the proper way. But lapping days are much cheaper.
Another thing, make sure that you have lot's of play money. Racing is very very expensive.