when i started my gt6 resto i couldn't weld, i can now.... not brilliantly but it's not going to fall apart.
start with scrap metal then go for easy welds on the car like little patches or spot welds on new panels.
you learn to weld up holes early on because you will "blow thru" the thin sheet on our cars, everyone has done it!
if you use gas, get larger 9 litre bottles( i use hobbyweld) rent free (i.e. you can keep the bottle as long as you want).
i have a gas/gasless migmate, it's great if you run out of gas in the middle of a lockdown as you can switch to flux cored wire and carry on.....
paul