If interested in Final Fantasy, I wouldn't start with FFXI. O_o

Maybe if you're playing it just because it's a MMORPG, then you'll enjoy it. Just remember, every drop you get at low levels, you can sell... expecially crystals; this is very important, as gil (the currency) is a rarety.

Anyways, if you're familiar with MMORPG's then you won't have troubles.