I would recommend a Makerfarm Prusa I3.
Printrbot is nice for a small printer, and pretty slow,
But bang for buck Makerfarm provides alot more, for same/less money,

It took me 10 hours to complete it aprox and get it to printing (Well i did it nonstop in one day, together with eating and going to a store or 2)

As skills goes i don't think i had more then a caliper, Philips screw driver , wrench, and solder iron and basic eletricity (Last one, well not realy anymore due the spoon feeding guides that make it realy easy for anyone)