Pretty much everyone here in the forum will tell you the same thing.
1) Buy a reloading manual, then read it.
2) Buy a different reloading manual, then read that too.
3) Repeat 1 and 2.
Browsing this Ammo & Reloading forum has a TON of reference material,
and more than likely, someone has reloaded the round you are reloading.
Has some very cool reloading videos online, so you can get a basic idea
of the process. As far as a reloading setup, its a matter of choice/preference.
Reading these forums, you'll see a constant agreement to disagree on the
positives and negatives of different presses.
Honestly, I think its more of a personal thing, as well as a quantity thing.
I stick with a single stage press, meaning I do a batch of bullet loading
1 stage at a time. Deprime/size a bunch, re-prime a bunch, load the powder,
then finally seat the bullet and crimp.
I prefer this method because it ALMOST guarantees no squibs
(dead round, or round stuck in the chamber from only the primer firing)
I say ALMOST because nothing is guaranteed. Even if you are perfect,
could be bad powder, could be bad primers, etc etc.
As long as you take your time, check consistently and ask questions here,
you should be ok and you should also have a hell of a lot of fun.
I started out with 2 reloading manuals, read them all the way through,
and then also browsed forums and asked questions.
There are 2 types of loaders out there on the market:
The single stage, which I use, means you do each part of the
reloading process in a batch, then change the die, and move to the next step.
With a progressive loader, 2nd type, all the dies (decap/size, prime, load powder, seat bullet, crimp)
are all mounted and every pull of the press results in a loaded bullet.
Single stage presses are much less chance of squib loads, because you can
always see the primer and powder load in each one, whereas in a progressive,
you can get a rythm and forget to check.
There are benefits to both. Honestly, if you are mostly loading rifle rounds,
and depending on the size, you should go with a single stage, as resizing some
of those larger rounds takes a bit of force.
Its also MUCH easier to check each and every load, and also make different
loads in the same batch. I.E. Say you're trying to find a good load for your rifle.
You could make 10 with a certain powder charge, say 20 grn, next 10, 20.5 grn,
next 10, 21 grn, etc etc. Much more freedom on a single stage press, especially
if you are trying to hit that sweet spot load for your rifle.
Also, you can change different grain tips as well much easier on a single stage,
then if you are doing a progressive.
Progressive is really handy if you're doing LOTS of pistol shooting, much quicker.
But, everyone has their own favorite and style, you need to learn what suits you.