Good questions. Camo hardly matters...just breaks up your outline a bit. You can kill them in a clown costume if you can sit still. Have your back on a tree, if possible, and have the shotgun on your knee. Only move if his head is behind a tree...not behind brush or branches. A blind offers the ability to move a little more assuming you black out the sides and back. Blinds are great but not as rewarding.
In time you will discover the areas they naturally strut, and those are good set up spots after fly down. Spot and stalk is tough. I did it a little in the midwest (maybe 10% of what I killed) and a little more in Idaho, but mostly because the birds here act weird and get into gobbler groups earlier among other weird traits. If you can see a turkey while walking around, it has seen you most likely. Stalking turkeys is really only possible if you get actual earth between you and the bird, then roll over a hill or pop out from a ditch and shoot. The exception is crawling in a field after a lone strutting bird that is spinning where his fan obstructs his view. That is a last ditch thing and tough to pull off.
Sit and call, then try another area. You can sit in a good spot all morning and periodically call. Or move a bit. Aggressive hunters with plenty of land and little competition can move and call until they hear gobbling, then set up, but you will bypass and spook birds that wont call. Many just come in silent, or only call when they see a decoy.
Lots to learn. Turkeys are a ton of fun. They make you a better hunter.