You will get three types of answers other than the ones telling you to do a search on the forum.
All of the answers are based on projection and anecdotal experience.
type one:
Buy a single stage thats what I did! The poster feels that reloading is complicated and dangerous to get started in. When the poster started reloading the concepts and procedures provided them a steep learning curve. This type of responder naturally assumes you are in the same boat.
That may be true, or it may be way off the mark. For Gods sake BUY TEN RELOADING MANUALS AND MEMORIZE them before you start. Never mind that EVERY thing you need to know to make a safe reload can be written on a single 3x5 card and in fact is in boxed sets of most dies. What ever you do don't buy a more complex press to start out than I did or you will kill yourself.
Type two:
Brand loyalty until death, and defying all logic, are the hall marks of the this type of responder. They honestly feel one brand or another is better than the other. Some how the carbide ring in the metal tube of this brand of die is much better than any other!! They will babble about red... green .... blue... and Orange colors and other sillyness with great emotion.
Type three:
The grumpy old bastard. Why in my day we would ram a hot poker up our rear ends to make ourselves cross eyed before loading just for the added challenge. What do you need all this modern crap for anyways.... Progressive!!! BAHH! I do fine on my Lee hand press. If you shoot more than 25 rounds in shooting session your wasting time any way.
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And then there is MY OPINION which according to the only person I need to convince is the RIGHT one you should.....
1. Sit quietly and watch somebody else reload for a while.
2. When that person is done reloading ask a few questions about what you saw. Heck you might not have any... Its just not that hard.
3. Do some thinking about what kind of rounds you want to make and know exactly which calibers you want to reload for. Be able to say.... I want to make and shoot 500 rounds for 45 acp and 250 rounds of 9mm and 50 rounds of 308 Winchester each month for example.
4. Decide if you have time and a place to reload. The most important is time. Time is expensive. If you don't have time to shoot 3 or 4 times a month you damn sure don't have time to reload. If I could only spend say two or three evenings a month on the shooting hobby, I would spend it shooting not frustrating the crap out of myself trying "work up a load".
5. Cost may or may not be a factor. If you are shooting 3 or 4 thousand rounds a month then NO AMOUNT of MONEY is to much to spend on a press and goodies. You can pay for your 1000 dollar setup in a few months in savings. But if you shoot just a few times a year to get ready for "hunting' then reloading is a waste of your time. You probably fall in the middle somewhere. Figure it out.
6. Get a good solid roomy bench with lots of light.
7. Use your eyes and your mind. Often the only real difference between cheap useless crap and a good tool is a trivial amount of money. Go to stores that sell this stuff and look at three or for kinds of "what ever it is you are buying" and compare. Price the stuff on the web as well, sometimes you can save money.
8. Don't get to caught up in the fine points right away. If your brass is sized correctly, the powder type, the powder charge, bullet weight, and seating depth are a good match then your done. Every thing else and there is a LOT of everything else, is gravy. Have fun for the rest of your life refining your reloading habits. But don't let some jackass scare the crap out of telling you you need to debur your flash holes or your 45 ACP hard ball reload will just suck. PLEASE!
9. Its important to be safe. Fortunately it is also EASY to be safe.