I have a MILLER MATIC 220 and works great, just take ur time and practice. Key is good penatration and work on ur beads next... There is a ton of diffrent way though, stich welding, tac. ect ect.. depending on what u are working on... Do not use flux core IMHO. its messy and looks like crap. I use a mix gas but see what works for you.. Good luck
PS Friends dont let friends burn with red...