Visit the weldmonger store http://weldmongerstore.com/
This is mig welding basics part 5 and its time to get some practice.
http://jflf.org/ james f lincoln foundation is a little known resource where you can find welding books and even metal project kits.
for a more detailed article on mig welding basics go to http://www.weldingtipsandtricks.com/mig-welding-basics.html