Any tips on leveling ...Follow

Just follow your quest lines, queue up for all guildhests and dungeons and make sure you complete your hunting logs and it goes very fast.

After 3 class/jobs it could become a pain. I'm hoping that is were group slaughtering helps/comes into play.

I want to be a DRG, so I looked into what is needed. Lancer 30 and Marauder 15. I started as a Maraduer, and had to quest until I was sent off to the other 2 cities (about lv16-17 for me). Changed to Lancer and began to quest in that town, and will do so up til I can unlock Dragoon. I then plan to move over to the 3rd town and start theirs. Doing so lets me have all them boring fetch quests that give exp. I think once DRG is up to 15, is when I'll continue the story mode.

Story quest, hunt log (unless I just see it wrong, I can't do other area's Hunt logs on a diff class, not of that town?), Class quest, FATEs, and the BattleLeve have helped with leveling at a somewhat decent speed.
I'm not a fan of the guildhests, only like 600-700exp per run (atm, I only have 2 unlocked) with a long wait...bah.

If you find leveling ACN to be painful, try leveling CNJ all the way to 30 first before touching ACN. You get an exp bonus when leveling a class that's not your highest level, and the size of the bonus is based on the difference in levels between your highest class and the one you are leveling. So having CNJ at 30 will potentially give you the biggest bonus for leveling ACN (assuming that the bonus doesn't cap at some difference in levels lower than 30).

Also, you get a significant bonus the first time you complete a Guildhest. So if you can get away with, you might want to avoid doing the lvl 10 Guildhests (which would also block progress to attempt higher level ones) on CNJ and do them the first time on ACN.

I started out as THM, and did all of the Ul'dah quests on that class. Then I leveled CNJ so I could cross class abilities. With just the Gridania quests, rested exp bonus and a few FATEs, I got up to lvl 8 or 9 without needing to do any Levequests. I think I had to do about 5 Levequests to get to lvl 10, which unlocked a few more quests. So even if you don't want to wait until CNJ 30 to either level ACN or to do Guildhests, the first 10 levels should go pretty quickly. You could even do something like the following:
- level CNJ to 15 using Gridania quests and main storyline
- after getting Airship access, unlock ACN
- level ACN using Limsa Lominsa quests to level 10
- do the level 10 Guildhests as ACN to take advantage of the first time clear bonus
- go back to CNJ (now you can do the lvl 15+ Guildhests on CNJ)
- finish up ACN to 15 whenever you have the Guildleve allowances for it

Then maybe ill resume it with Lancer, due to having to level it to 30 anways. Goal for today/night is get it to 15+..should not be hard. im already 13.

Grid
CNJ - conjuror
LNC - lancer
ARC - archer

Limsa
MRD - marauder
ACN - arcanist

Uld
GLA - gladiator
THM - thaumaturge
PGL - pugilist

edit: fixed abbrevs. and note, I didn't include the JOBS...just classes because, well, classes. However, new FF people won't know the FFXI abbrevs so... see below this post from Taisae for those. Thanks all.


Edited, Aug 29th 2013 1:42pm by Refews

Adding:

PLD - Paladin
DRG- Dragoon
MNK - Monk
BRD - Bard
WAR- Warrior
WHM - White Mage
BLM - Black Mage
SMN - Summoner
SCH - Scholar

And please stick with ACH or equivalent for Archer - ARC can be Archer or Arcanist both.

Just have fun my friend no rush.