Some things to note before printing:
You may want to scale up the files to a larger size. My printer only works in millimeters so I converted the dimensions to 40mm for each inch (about an increase of times 1.57). The small pieces probably can't be printed smaller.
You Will probably need supports for the arms
Under the bolts file you will see four identical objects and a set of two identical objects. The two identical objects are pegs designed to be hammered into the hole in the arms and base in order for them to connect together. If the peg doesn't fit in either hole, use some means to widen it. I like to open scissors inside of it and turn it around in there to shave off the sides. This happens to me due to a printing discrepancy on my z-axis, so you should be fine if you don't have this.
I found success printing the head so that the eyes face up (but that's just preference)
- Everything is designed to slide into the pole created with the base. Make sure all the pieces (except the arms) have big enough holes to slide through the pole.
Anyways have fun and enjoy :D