I started woodworking as a hobby but, with a major house rebuild (doors, cabinets, flooring, furniture, etc) so I invested in industrial milling equipment and purchased rough sawn wood. The aggravation of buying s4s and having the wood move (warp) even though it's FAS grade led me to milling my own as needed. I made some mistakes early on buying finished milled wood and dead stacking it while waiting for the time to do the project. Well, 3/4" lumber had to be milled to 5/8" or less to get straight boards for furniture and I ended up with a lot of wood chips and saw dust. Short term, keep your purchases small look over the wood carefully and stack it with spacers in between to allow air flow around your expensive purchase. If you like the hobby a lot, get some equipment to mill flat and straight pieces for your project (furniture projects, not decks and fences).