You have a fantastic teacher in the form of the internet!
Course it will never be AS good as a good drum teacher, but it'll do! (and it's a damn sight cheaper than private lessons!)
It's definately possible to teach yourself, i did and a lot of that initially was just drumming with my hands and feet everywhere i went. much to the annoyance of people around me. you can practise the co-ordination for offbeats, double time beats etc just using this method!
and if my testimony isn't enough, John Bonham taught himself. So there you go!