Guild wars tend to cater niche PvP oriented player, WoW is made of win and addiction...

well for starters... buy the starter pack first, put the expansion on hold... buy the expansion only and when only you reach level 60 or close to it... because new player tend to take longer time to hit 60 than others... even there are a burst 20% to levelling speed to 60 since 2.3 hit.

BTW... welcome to the community