Yeah I realised the same thing and I am actually looking at book right now. Found 2 that look to be good and complement each other I think. Dummies is one of them 
Well About the P2N222A, I have 2 of them in the Sarkfun kit that I bought. But I cant find anyone in sweden that are selling them.
And if I would be able to use one of these Darlingtontransistors that would be easy, simple and cheap. Maybe the books will tell me if they would work.