Hey bud, welcome to SP forums! If I were you I'd really give a shot at animating without a tablet at first. There are a lot of things that you can learn starting out without one just as effectively. You may find out that you might want to take your creative inspiration in a different direction. For instance, many animators you prefer line actually find it easier to animate line with their mouse vs their tablet.
However, if you are going to get a tablet i highly suggest a wacom bamboo.
http://www.amazon.com/Wacom-CTL460-Bamboo-Pen-Tablet/dp/B002OOWC3I
Cheap, effective and long lasting. You wont regret that purchase.
Whatever you get, i do suggest amazon. If you buy straight from the supplier you WILL pay more for the
exact same product. Down to the box it comes in and all.