As a warrior, you need to be up close and personal in order to deal damage. This puts you directly in harm’s way, so you’ll need to keep a close eye on your character to ensure your safety! Make sure to run out of fire on the ground, and never attack bosses from the front! This will allow them to dodge and parry your abilities, effectively reducing your DPS.
The vanilla WoW Horde leveling guide you see on this site was originally made back in 2006 by Joana (AKA Mancow, or FuriousPaul). The guides have been tweaked many times over the years to make things "faster". The leveling guides were made because of all the messages I got from people asking me how I was able to level up so quickly on new realms. I was first to level 60 on 7 different realms (3 with Mancow and 4 with Joana), even winning Blizzard's "First to Level 50" contest they held back in 2006.