If you are new to game dev and looking for some free 3d models that are rigged and ready for animations, boy do I have the site for you!
I'm about 5 years late to the party, but for those of you just as clueless as I was let me share with you a site called mixamo.
This site offers free models that are all rigged using a standardized humanoid rig. The benefit to this is all of the animations on the site also work with that humanoid rigging, making this a one stop shop for simple models and animations.
These assets are 100% royalty free and can be used to make games. I'm not suggesting this replace art for larger games, but maybe something to consider for your next game jam?