iam a level 47 blood elf mage and i have some great gear and ya and iam gonna play some wow this weekend cus i only play on weekends i dont wanna get addicted cus i hear it can take over your life and i heard raids drop epics and i want some epic gear so i was wondering what level do i need to be before i can raid happily and get some epics?

The first raids start at level 60. These are:
Upper Blackrock Spire
Molten Core
Ahn Quiraj Ruins
Ahn Quiraj Temple
Black Wing Lair
Onyxia's Lair
The Dragons of Nightmare (world boss)

These raids are occasionally run by high level players for achievements so when you hit 60 you can look for a group. At 70, new raids are unlocked:

Black Temple
Magtheriden's Lair
Gruul's Lair
Serpentshrine Cavern
Sunwell Plateau
Caverns of Time: Mount Hyjal
Karazhan
Doom Lord Kazzak (world boss)


At level 80, more raids are unlocked:

Naxxramas
The Vault of Archanov
The Eye of Eternity
The Obsidian Sanctum
Ulduar
Trial of the Grand Crusader
The Ruby Sanctum
Icecrown Citadel

These raids are run semi-often for achievements and mounts, or just to see content.

And finally, at level 85:

Blackwing Decent
Baradin Hold
The Throne of the Four Winds
The Twilight Bastion
The Firelands

These raids are run very frequently and provide the best treasure. you can find a run in any major city, but you are required to be level 85 to do them. It is also suggested you look the raid up before doing it so you know what you are agreeing to to when you join a group. You can look up any raid as well as any other thing in the game at this site: http://www.wowpedia.org/Raid

Good luck!

I'm not good at this game, I'm only 21, so...