well u can try this website....i found it quite useful for horde,it minimize your time so u dont waste so much time running around
http://www.wow-pro.com/leveling_guides/jam...guide_chapter_i

World of warcraft is a mmorpg game that the real gameplay start at lvl80 at you max lvl (or lvl85 now i am not sure whether it implement yet). After your max lvl you will find out that this game is not all about lvling and grinding, its a whole teamwork game when you go in to dungeon and complete it. You should read more about the gameplay. The lvling is easy if u found a good guide from any website they teach you where to do quest and complete them in minimum frame of time. So no need worry about it.