I think that is the point, he is inferring that you should do some research before asking for help. There is a ton of info on this site about the question you just asked. It's one of the more popular questions. Also, if you read every post on the forum and still have questions at least you have a better base understand of how to best ask your question.

In reference to your original question; personally I have always taken the 'long way' to leveling. For example I leveled my EU Warlock 66 to 69 ONLY by grinding voidwalkers in Nagrand. Why? When I turned 70 I already had the full Frostweave Set and I had 4 stacks of Primal Shadow left over. I also got enough Netherweave to level tailoring and fist aid on 2 toons. My point is, take the most comfortable approach for your situation. I did the 60 Quillboar tusk quest on all 5 toons because I needed Linen, Wool and I could farm a buttload of blood shards at the same time.