
There are many free rigs available to Maya animators hoping to practice and learn their craft.
Norman, Max, Morpheus - these are all excellent rigs, easy to download, all free for non-commercial use.
But beware - all rigs are different and each one has its own quirks. All take time to get used to, and each one has its frustrations. Norman was one of the first character rigs made available for student use, free on a non-commercial license. Norman is reliable, relatively simple to use, and highly customisable.