Click on the link in me siggy, lots of tips and advice on there to get you started. Buy a mig. Gather up as much scrap metal as you can find, and practise running lines of weld on it. You should just see the line of the weld, on the back of the metal, but not break thru. The weld should look like thousands of letter C's joined together. Once you're happy with that start practising welding 2 bits of metal together. start by laying one piece over the other (Lap weldingf) then place em side by side (Butt welding) The more you practise the better you'll get.