Tig welding 101

I have a ESAB 252 for tig and a super old Daytona mig welder. As for buying a brand, I recommend the brand of welder thats supported in your area. ESAB invented tig welding but if no one within 180 miles sells parts for it, your in a world of hurt. All of the brand names make good welders.
Not all Tig welders will do aluminum. Do your research.
Many good welding machines show up on Craigslist and E-Bay. Also contact your local schools for auctions. I bought my ESAB for $214.00 on a gov auction (http://www.govdeals.com/index.cfm) it included a foot pedal and two weldcraft torches.
Be in no hurry and enjoy shopping.

Whip
http://www.weldcraft.com/