https://amazingribs.com/information-about-our-pitmaster-club
start reading, between him and wash I learned most everything. wash and I actually went back to meatheads way of doing butts awhile ago with no wrap, I feel you get a better bark.
he should have recipes for rubs in there too, if you have an extra 20$ his book is great and a lot easier to use than the web site
https://www.amazon.com/Meathead-Science-Great-Barbecue-Grilling/dp/054401846X/ref=mp_s_a_1_3?dchild=1&keywords=amazing+ribs+cookbook&qid=1613955940&sprefix=amazing+ri&sr=8-3