Need help with animations

I'm trying to make a simple walking animation for a simple cartoon-ish character in unity. I've spent the better part of 3 hours looking into tutorials and messing around with 3ds max and motionbuilder... and I'm not a bit closer to anything.

I honestly have no idea what I'm doing, or even where to start with animating my character.

This is my model.. and that's about all I have. It has no bones (because I have no idea what I'm doing with them) and its really getting frustrating that I keep flailing around like this and getting nowhere.

Anything that could give me the push I need to get started would be greatly appreciated