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Sticks aka arc is the best way to go if its only small jobs, those cheap mig welders are junk from many people i know and have read about who have bought them. I love mig, though the price is to rich for small jobs to justifie buying one the welds are sweet and slag free. Mig welding takes a bit to get use to because of the feed speed and juice rate, then the art of welding on top of that.
Anyhow simple answer is grab a stick if your only doing a few small jobs around the house, just get the biggest you can get if your welding heavy plate. As for tafe courses, do a short if you have the time but if not theres tons on youtube and the internet. Lol i've had my share of weld flash but its not that dangerous, just use common sense, long sleeves, jeans and a pair of boots with jeans covering as you don't want hot foot haha. Just practice with some scrap of the same material you plan to use to get the amps rights and the weld good. If i could oxy fusion, mig and arc back in yr 8 after bugger all teaching i'am sure you can at your age, its not the complicated though getting the feel and a good weld takes experience.
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