Slenderman Monster

[Statyk]

You can register as a student for a free license. you can have Maya as long as necessary, the only drawback is that it is illegal to sell the models you make. This is fine when it comes to modding.

So register as a student and when you go to download, there will be a droparrow of what version you would like to download. Download 2011 and pick either 32/64 bit, depending on your system specs.

As for rigging, there is a lot of experience to come to doing so that I cannot say here or I would take up too much space and time. You can find some good rigging tutorials on youtube. (That's where I learned the rigging process, mixed with experimenting with functions)