First off, I ask that you please do more than just single word posts (especially single post topics).
As far as the answer to your question, right now the common way to level up is to focus on leveling in Grounds of Valor areas.
Given how Grounds of Valor (and Fields of Valor by extension) works, you can stick to mobs that check as easy prey to you and still gain decent amount of experience through "page burning". You'll want to probably hit areas like Zeruhn Mines till around 8 or so, then burn through levels in Konschtat or so till you can do Gusgen Mines.
While I know you're wanting to exp solo, the whole "Beastmaster" stigma for parties has come and gone, and page burning parties and alliances in Grounds of Valor areas make for great sources of experience till you can get into Abyssea parties.
My thoughts and reviews
Lady Jinte wrote:
Vlorsutes' Negotiation Skill rises 0.2 points
Vlorsutes' Observant Parent Skill rises 0.3 points
Vlorsutes' Argument Diffusing Skill rises 0.1 points
on all sorts of sci-fi stuff...and things.