Dude! I can effin weld now! You rock. Already had a welder, prime weld ct520d, because my wife had gotten it for me. So I skipped to the prep and striking an arc etc. The info in there made a night and day difference for me. I blow glass and want to make molds and cut metal designs with the plasma cutter to blow to blow into. Anyway I have struggled with the welding and the info I got got from just skipping around your course is fantastic. Am I some great welder now? No. But I went from making sputters and drops that could break with minimal force, to a decent looking solid strong weld within a couple hours. I have since taken cheap things I found, cut them apart and remade them into equipment I use in my glass blowing studio that would have cost me hundreds of dollars to buy. Worth every penny and then some.  The info in this course is great and made a night and day difference for me. It's thorough easy to follow.  Great resource.