Man , I built boilers for 15 years, and its easer to watch and learn than fight it .
get some help , as for schools well I wouldn't go take a wield test anywhere and tell them you went to school ,real world jobs . The guys just out of school got no respect at all , tell then you just learned at home.. Stringers , back wields, bevels , up hills ,9G , there is so much that you can learn in a short time with a little help . I made wielders out of my helpers in no time , they worked with me then I helped them , if they were lazy then they could just grind there life away and I didn't want them. In the real world there is a wield proceager to read and fallow , Clean , settings , preheat, wield size , filler, cap , inspection. I was always suprized how much water is in the steel ,
run a torch over it and see what comes off , stainless , carbine , 1 1/4 , 2 1/4 ,9 crome ,
the best I can think of is get it clean first , preheat if you can -run the water out , wield up hill ,down hill wielding is bad and will blow your wiled full of bug holes, watch your heat ,you will learn when to hold and wait for the rod or wire to fill in for you , Good luck , Bull