Get "Stick Control" by George Lawrence Stone! It has rudiments for you to work on that will last you your life.
It is a grey paperback book that you can buy at Sam Ash or Guitar Center with a picture of a Colonial Snare Drummer on the front.
Trust me, it helps a lot with coordination and theory.
a few simple exercises i thrash out on my legs is paradiddles, double strokes and blast beats. I do paradiddles and double strokes for a few bars between my hands, then between one hand one foot then between the same hand and a different foot and keep going until i have done every combination between all of them. And i just practice blast beats because i suck at them and i believe they develop my hand/foot co-ordination.
But once you want to expand on that do as others said and get a book.