Edit: Katsu edited out their rant to be gone, haha. Trying to make me look stupid. ^^; Below is my response to the rant about there not being enough "info on posts".
That's kinda impossible, cause these factors are majorly dependant ona few things for your first exmaple. Sometimes things are cheaper in hte AH than hte NPC for certain items, for others not. Some items sell for a lot on one server, cause there are more people needing it, where on another server, it might be completely different. I'm sure you wouldn't want to buy a content id to get onto EVERY server to check out hte AH prices, ne?
":shock: grr. Ok so here it is. People all over these post are doing good things, but you NEED TO BE SPECIFIC! on a post somone said make easy gil by buying somthing in windy and selling it in sandy, AH or NPC??"
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There are many resources for finding what levels things are. Although monster names are helpful, you should know by now that you can't take on a level 10 monster at level 1, ne? Compare the levels on the area, and choose what is suitable.
"another person on leveling guide says goto area for lvl. thats it. what do we fight? in which lvl ranges? BE MORE SPECIFIC

grr."
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This by no means is an attack on your post, jsut kinda pointing out things are different, or can be very self explanitory, with very little work.