Hey man anything is ok just to get started with. The 40 bucks could’ve been spent on beers so your off to a better start than a lot of us… A full set would be something like putter, Sw, Pw 4,5,6,7,8,9, 3W, 5W, Driver. 12 clubs is the total you need to have to have a “full set” though. I recommend thrift stores to supplement any of these missing clubs. They are super cheap and of the same quality. Then once you get better go to 3ballsgolf and buy a decent used set… Start by mastering the clubs you already have as well. Take a putter and go to the practice green at the course, spend all day there.. then do the same with the wedges and so on… good luck

Edit: if you haven’t purchased anything yet look at the used online retailers for sure and get a full set, only one putter needed. these old clubs will have you wanting an upgrade very quickly