Cool deal, learn it's limits and stay within them and it'll serve you well.
Fuzzbean over at Home Gunsmithing has a couple of great threads regarding the HF mini mill. He bought the next larger version but there's a whole bunch of good info in them about using these mills and the tooling/setups to accomplish a given job. Well worth the read and lots of pics illustrating things.
FB's HF mini mill thread
FB's scratch built 22 pistol thread