My best advice to you, is (unless you're at college) is start with modelling, then learn the very basics of everything before something takes your fancy, then stick at it until you become a pro at it.

Otherwise you'll become so confused! Besides, lets face it, creating skeletons isnt the most exciting subject is it.

Browse simply maya like enhzflep and neo said, as the guys here produce some fantastic tutorials!

Failing that, try these:

www.pixalbeat.com or even better, www.learningmaya.com