I did complete the course from Penn Foster. I found it very helpfull. It is especially helpfull if you are into the Gunsmithing buisness. I also love all the extra stuff they send you such as tools, nra assembly, guids, gun values books, and many learning aids in addition as well. But yes it is expensive its about 700 bucks or so it takes about 6-10 months to complete (you have a year to complete it ) But it is a nationally accredited Organization that issues you Gunsmith Diploma. Hope this Helps ...