Pretty much all the servers are the same. The starting cities are deserted, as most people are "high-level" now. But don't let that stop you, lots of low-level parties are going on all the time with level-sync. Just throw your party flag up from anywhere, get your sub-job leveled up and you'll get invites soon enough.
Low-level gear isn't as available as it used to be at auction houses. You'll find you'll have to travel to Jeuno for gear quite often.
Get in a social linkshell and you'll get all the necessary pointers.
Couriercarrie, BST80. ⚠☢☠☑