Welding coupons...

Kind of like riding a bike once you got it down.
Not getting in a hurry and keeping it clean is key.
Probably the hardest part is not dipping your tungsten. Kind of like threading a needle during the entire weld. Learn on steel and progress to aluminum
Is what worked best for me.
It is closely related to oxy acetylene gas welding as far as technique. Requires a close eye.