I'm going to agree with the advice to get yourself a couple of good reloading manuals. Lyman and Speer would be my choices.
I've never reloaded 7.62x39, but with .308, I've had good results with Varget and Winchester 748 using 175 gr. Sierra MatchKings and 155 grain Hornady A-Max respectively, both loaded with Remington #9 1/2 primers.
The Lee Loader, as mentioned, is good for doing a few rounds, but something about seating primers with a hammer just seems spooky to me. I'd spend a few extra bucks and get a
Lee Handpress Kit, a full set of
Lee scoops, a scale (
Lee's scale is accurate, but a pain in the arse to set, IMO), and
dies for
each. The Lee dies I linked each come with a powder scoop and some loading data, so you can forgo the scoop set I linked above if you want, but you'll be limiting yourself to whatever powders the scoops that come with the dies work with. If you buy everything I listed there, it comes out to around $120ish before shipping, I think.
Then again, by the time you've bought all of that, you could probably buy the
Lee Challenger kit and the dies you need and be up and running for about the same price. The Challenger press has to be mounted to a bench, as does the powder measure (I temp mount powder measures to a table with a C-clamp). I have this kit, but pre-breach lock system, and mine didn't come with the on the press priming setup. The primer catch system on my press doesn't work real well when it's completely empty or too full (primers bounce out), but they seem to have redesigned this on the newer Challenger presses. The powder measure is kind of cheesy, but it works (be sure to read the directions and prep it properly, though). The scale is cheesy and a pain in the arse to set, but it's accurate once you do get it set.