Somewhere there is a comprehensive list of the stuff to buy, and in what order.
Recovery points
Rope/strop
Mut Terrains
CB
some mates (friends, not profelactics)
diff guards
there's probably other stuff you could buy before it starts to get a bit silly
steering guard
rock sliders
tank guard/removable tow hitch
the list goes on and is only limited by the depth of your pockets.
to start you want to get the truck running properly, add the recovery points and tyres then get out with some mates and try it. As other people "why have you got that?" and "was it worth it?" (I've used my winch ONCE). so that you know what your truck does in standard form and what you expect each modification to achieve, then you can balance cost against benifit..
As soon as you have to jacking points for it, get a Hi-Lift. It will do as a winch, it can lift from the bumper or wheel given the right accessories too, sometimes that's handy.