Wow.

So I love the game, I just find myself getting into spots where I need a level to continue the story quests which is my main focus. I plan on doing some sidequests when I start working on my Rogue. I found some pages with levels and zones, but it was an inaccurate representation. I'm wondering if there is a solid guide for more specific leveling. I understand some hubs have quests with a wide range of level requirements too so it may be difficult. Also, players have been awesome to me. Being a huge FF fan I wish I would have gave this a fair shot last year but I didn't. So if anyone knows of some zone level guides that'd be awesome.

The best ways to level are generally irrelevant of the level of regular monsters.

First and foremost, the best EXP comes from dungeons. As you should have more than one dungeon available, doing your Roulette: Low Level each day grants you a massive EXP Bonus, on top of the already high EXP from dungeons - you should net about two levels just from that!

Past that, sidequests generally are for the level that you reach the area in on your main quest - for instance, when you head to Camp Drybone at around level 18, the sidequests in the Camp Drybone area are going to be around level 18-20. These also are around the level of the FATEs that will spawn in the area. Now, frequently a single zone may contain additional sectors that have differening level ranges, but as a general rule, the closer it is to wherever your main quest line is taking you, the more level relevant it will be.

For levelling alternate classes, you may no longer have sidequests available, in which case I recommend FATEs in...:
1-12: Do your hunting logs, class quests, and a couple FATEs in the areas your hunting logs send you to.
13-19-ish: Western La Noscea typically
20-30: South Shroud, I think it is?
31-40: Coerthas Central Highlands
41-45-ish: Mor Dhona
46+: Northern Thanalan

Mix in dungeon queues while you're doing those, of course.

Also unlock the challenge log in Limsa Lominsa somewhere at the market. Completing the FATE, Dungeon and some other challenges give a nice XP boost and free Gil.
And besides that use cheap food of any kind (Fairy apples are good enough) this gives 3% XP boost and your FC can activate "Heat of the Battle" 1 or 2 to help you as well.

Challenge log.. I will have to look for that, thanks for the help guys.