Few Questions

I just bought all three games. I'm just wondering since i started with nightfall because i thought the idea of dervishes was neat, how would i go back later with my dervish to do the faction and prophecies campaigns?

Also the reason i bought this game was because a few of my friends said the pvp here is way better than WoW. I know i'm probably going to get some biased answers but is that true? I hated how gear reliant wow was and it wasn't really skill related. How is this game in that perspective?

Lastly, If i really like pvp is it better to do a pvp-only character or play through the campaigns because your character will be better built rather than just straight to level 20?

a little ways into nightfall there are quests to take you to tyria/cantha(chack wiki)

Yes, the PvP is way better, and all the gear is balanced

If you are playing PvP you really Need a PvP character slot. there is no downside to a PvP character, they have all max gear.

Gear is almost meaningless in GW. It still matters, but they are all relatively the same and the available mods are never enough to swing a battle in your favor by equipement alone. Same for weapons, although you should consider choosing a weapon to compliment your skillset (ex. if you use attacks that cause bleeding you may want to equip a Barbed mod for your weapon to lengthen bleeding duration on foes).

Since there are only 8 skill slots avaiable at a time, the build options are almost endless, it makes for great variety and creativity.

PvP characters are exactly the same as a fully developed PvE character. However most people use PvP chracters and just reroll them everytime they want to change profession because their a lot easier at changing builds/armor/runes/etc. No one likes carrying around 50 sets of armor, whcih you already have to carry several armor sets in PvE anyway.

the only drawback to using a PVP character (atleast when you are new to the game) is that you have very few mods/skills/runes unlocked on your account. So i would definetly suggest playing the PVE side of it as well for quicker unlocks although you can unlock these things thru the priests that are in each PVP area ... I would recommend checking out this website www.guildwiki.org for more information.

You guys have been really helpful. I picked up this game to mainly pvp although i have been doing a lot of PvE, I have a dervish necro and im on the mission right after Centaur Blackmail where i have to get arrested. i can't beat that quest for crap -.-

One thing I'd recommend is instead of taking your dervish through prophecies and factions straight away, start a character on that continent (either Cantha or Tyria) and play for a while on there, even if you don't finish the game with that char. You're gonna miss a lot of content if you just play all continents with the one char (unless of course you don't care about the storyline. In which case, ignore everything I just said)