I have been a pipewelder for 25 years now,my mom taught me at age 14.I take it you guys are only wanting to weld at home,on home projects.Contact your local welding supply shop.They will know of local courses in your area,also they know alot of your local welders who might give you a crash course.
Max has also given you some good info links.
If there are any questions or help I can give you guys email at
Cayotekiller@yahoo.com or post it here