The class should be a blast. A bunch of us that worked together took a class at the local jc that covered gas, arc, mig and tig, all in a few short months 2 nights a week.
On the first day of class, the instructor told us that right outside the back door was a real aloe plant/bush. He said when (not if) we burn ourselves to run to the plant, rip off a petal, break it open and rub the aloe immediately on the burn. We all scoffed at the idea of being so careless to cause a burn, especially with our welding gloves, aprons, hoods, etc. At some time during the next 3 months, I think everyone visited the bush. Pure aloe really does seem help the blistering and scarring.
If you are serious about welding or playing the piano, remember, practice makes perfect.