I had been welding with stick and gas for a long time. I learned both techniques as well as cutting when I worked as a rocket engine mechanic at Rocketdyne, formerly part of North American Aviation a long time ago.
I got very interested in Heli-Arc there after seeing the machines and work that was done there on rocket engine parts. Heli-Arc process was a trade name and it is now called TIG (Tungsten inert gas).
Around 1994, I bought a used Lincoln Idealarc 250/250 TIG/Stick Idealarc machine and started to practice with average results. I decided to step the process up and so in 1994-1995, I took a one year course in general welding at the local community college.
I certainly got my money's worth. In the second semester, the instructor saw that I was mainly interested in TIG and he would let me work on one of the machines almost all of the class time. As a result, I got a lot of very inexpensive time on a TIG machine and gained experience that I was able to use at home.
It's hard to believe but the cost of the class was only $35 a semester. I showed up with a big smile every Thursday night and never missed a minute of it. I bet I used more than $35 worth of argon and filler rod at every class.
My point is, that I would highly recommend that anyone take a night class at a community college. I hope that there are some left with all of the budget cutting that has been going on nationwide. It was a fun experience and I improved in all phases of welding, including gas, stick, MIG but especially TIG, which is my favorite.
A few years ago, I got a Lincoln SP 175 + MIG welder and traded the Lincoln TIG in on a Miller Syncrowave 200. Both of those are perfect for the home shop. I also have a set of Victor gauges with medium sized tanks. I use CO2 for shielding gas on the MIG and argon on the TIG. All of my tanks are customer-owned.
Try a community college. You will enjoy it!
Here is a picture of my welding bench. It as a 3/8" steel plate for a top and the base is an old steel typing desk. It works for me.
Miller Syncrowave 200 with attached water circulator for liquid-cooled torch.