how to use a MIG welder

ForeCut 40D $599.99 Link to tool: http://www.jbtoolsales.com/longevity-forcecut-40d-40amp-pilot-arc-plasma-cutter-dual-voltage#oid=1002_1 Migweld 140 $329.99 Link to tool: http://www.jbtoolsales.com/longevity-migweld-140-140-amp-mig-welder-capable-of-flux-core-and-aluminum-gas-shielded-welding-110v#oid=1002_1...