One critique I would give is that when this game is your 1st MMO, the game needs to show you how to use your skills correctly. It may give you a description of what it does, but it should give you a demonstration with a follow up quest from your guild once you unlock it, to have you use the new skill properly, whether it's a buff or has secondary properties such as stun or silence.

When I 1st started, I didn't know what a tank, DPS or healer was. I picked Marauder because I favor axes more. Little did I know the troubles I would run into being a noob tank. I was struggling bad since I didn't know my role or exactly how to use my skill set. I was going to quit the game because of all the mistakes I was making and hated doing dungeons because of it. Thanks to friends and trial & error, I finally figured it out, but the game doesn't really do much to help explain your skill set and how to use it properly.