I would say the best place to start is to go to a book store and buy a book on welding. This way you can learn about all the differnt kinds of welding and welding equipment.
The best place to get the equipment would be at welding supply houses.
They will have everything you need. And they all sell used and reconditioned welding equipment. And the people have knowledge about welding and welding suppies.
Also, stay away from the cheap stuff. Which ofcourse you will not find at welding supply houses. I would say the best
and to look for is Miller.
Good Luck. And go to this wedsite.