I'm a new player, been playing for about three weeks. Right now I'm leveling a few different characters, just learning how everything works, and what I like best. I have a few that are of high enough level to do dungeons, and do a few a day typically. I understand how they work, and all of that. I find them to be easy actually. A friend of mine who's never seen me play said that I'd be able to level a character to 80, but I'd never be skilled enough to do raids. I've heard raids are complex, but I'm not sure. Basically my question is how raids work. Any information would be great. Thank you.
I know it's going to be awhile. I won't be doing them until level 80, I'm half way there currently.

I have an obsession with the game though, and want to know was much as possible.