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http://legacy-wow.com/vanilla-horde-leveling-guide/
This is a really extensive 1-60 leveling guide.
I hope this guide is helpful because it took a lot of work getting the formatting legible and linking all of the quests to the Twinstar vanilla database.
I skimmed through it, it seems like a good guide. Map with numbered checkpoints really helps. I wonder if someone with experience could tailor it for x5 exp rates.
just move on when your lvl is appropiate. routes are pretty much, but you will be faster :D