The Lee kit comes with an instruction book with some data in it. I think only old guys buy hardcopy manuals now days; most powder companies have their data online.
After the lee kit its bullets, brass, primers, powder. maybe some plastic cartridge boxes.
* You do NOT need to tumble fired brass. In fact there have been several guys who became seriously ill from poisioning from all the primer residue that shakes loose when they're tumbled. The stuff was found all over cothes, door knobs, counters, etc. I clean primer pockets with the tool in the kit so to fit a new primer in and leave it at that.