I had a number of people inquire about doing a possible MIG welding writeup, not unlike that which I did for TIG.
I thought about it, looked through my resources, and there's no way I could do a better introductory writeup than Miller already has. I strongly suggest printing this out (Adobe PDF file), reading it over, and keeping it as a handy reference when practicing your MIG welding skills. Heck, I even refer back to it from time to time when I overlook some silly/obvious troubleshooting mistakes.
http://www.millerwelds.com/pdf/mig_handbook.pdf
I thought about it, looked through my resources, and there's no way I could do a better introductory writeup than Miller already has. I strongly suggest printing this out (Adobe PDF file), reading it over, and keeping it as a handy reference when practicing your MIG welding skills. Heck, I even refer back to it from time to time when I overlook some silly/obvious troubleshooting mistakes.
http://www.millerwelds.com/pdf/mig_handbook.pdf