Welding for the first time - need advice

I'm no expert, but have the same welder...

When you turn on your gas you will see right gauge come up. turn the regulator in to about 23-24 on left. It should drop a couple when you pull the trigger if it is working and you will here the solenoid as mentioned already. 20 is probably good for inside, you will need more if you are working outside like I am most of the time.
I try to minimize butt welding as it is a bit tricky. You can use copper or brass behind it and it will allow a little more heat without blowing through. I rarely use setting 1. I believe I'm usuallya around 2/20-25 for body metal (20ga). I got a pneumatic flange tool at harbor frieght that allows for a neat, level overlap,