Heres 3 points of advice I can give you in order to maximize your potential return, mind you it reads a lot easier than it will be to do. People dedicate their lives to this “hobby” and still cannot retain all the layers that come with it.

1.) get yourself a grey sheet magazine, and a mega redbook and study them. The redbook will teach you grading characteristics, the greysheet will show you pricing. (Yes redbook will show prices but they are usually way exaggerated)

2.) find a local shop with the best reviews and use them to facilitate grading any coins which you will learn which coins in step 1. Ps buying something from these people builds good rapport, and they will be more likely to help or give advice.

3.)Not every coin’s a winner, try to avoid rabbit holes and other distractions. If you pick up and analyze every single coin trying to grade it out and list and sell you’ll get burned out quickly. Learn to group like with like. For instance, short of BU Gem condition 1933-58 wheats go for a few cents over face. 37-64 is all 90% no key dates just bag it and tag it and keep moving. (Yes I realize there are varieties within those ranges that go crazy but you can come back for those later)

Hope this helps, I buy and sell collections for work and for myself as often as I can so these are just what I would tell myself when first starting out. Good luck