[Timefounder]

Sorry about the delay, but if you ever come back to this:

The camera is mostly 3rd person "hanging" behind, although you can zoom in to get a first person view (occasionally useful, but I don't play that way frequently).

I would suggest buying just Nightfall to start. Each GW game can be played alone or in conjunction with the others. Buying the newest version means you will have more people to play with. Also, I think Nightfall has a good pace and it supports Heroes (AI help that is more customizable than henchmen). After that, you could move on to buying Factions for a speedy way to level, Ritualists, and Assassins; or Prophecies (the first game) for a more expansive PvE experience and easy ways to unlock skills for the core professions.