Terrible suggestions that sound good

[Dr. Doom]

-Buy all your spells, the more the better
-While leveling always try to invest money on gear to have the best possible and make it easier.

Did this.

Level your Warrior as Prot so mobs have a tougher time killing you, and you can optimally tank dungeons on your way to 60.

Did this too.

[lumpY]

Always use Life Tap as warlock after every fight instead of drinking. Do not eat to regain health. It's a healers role to keep you at 100% after all.

[Vesterskov]

-As soon as the tank attacks, burst the mob to kill it as soon as possible.

^

The right way for most trash mobs and bosses, dungeon or raid