I use to play it... I started playing it because I quit the game Fiesta (a cutesy version of WoW in a way, sorta like Mabinogi, but less gay). I honestly isn't that great. I got to level 20 on two characters and gave up... The game just lacks something, but I'm not too sure what. Though, I've played WoW and I felt the exact same way. So if you like WoW, you'll most likely like it. One thing to be warned about though, is that you will eventually feel you NEED to buy some cash shop items to be able to keep playing, such as the inventory stones (increases the inventory spaces by a lot). But you won't need those upgrades until about level 30-40.
One thing I recommend is playing as a Venomancer for your first character as they are a very great beginner class. They can tank and damage deal. The only draw back is you MUST be a female. Whatever you do, don't choose Wizard as your first class as you'll be jumping up and down in frustration after level 15.
If you need any more help with the game, just inbox me. My girlfriend managed to reach level 55 or so and her dad (yes her real life father) managed to reach level 91 or 92 (last time I checked, which was about a month ago). So I can probably help you if you need it.