Hi Paul.
I was in the same position as you.
I bought a Cigweld 150 MIG which is a gas or gasless welder.
I think its fine for what I am doing, but it would be nice if it had finer heat control. But to get a Lincoln or similar with that was about $1000+.
Obviously gas welding is better, but unfortunately gas is expensive - you have to rent a cylinder and buy the gas. You can get those little cylinders in Bunnings etc. but they last about 5 mins.
I was looking at a TAFE course also, but for $300+ each for level 1 and 2 , they didn't seem to teach much actual welding.
I would not spend less than $500 and get a brand name.
Thats my 2c from a newbie also.
Cheers,
Frank.