Welcome to Eorzea Gem!

From my understanding Goblin is one of the less populated servers so you might find things a bit quiet there - all US servers are actually based in Montreal Canada, so any one on the NA server groups will be fine. Balmung is probably the most populated (as its the unofficial RP server) but hence is almost impossible to create a new character on (although transferring there from another server shouldn't be an issue).

If you've never played a FF game before this site may be helpful for you for getting up to speed with the traditions and reoccurring ideas and elements of the earlier games that FFXIV has at it's heart and references constantly.

Finally this site can be very helpful if you're finding yourself stuck in the game and needing assistance.

Anyway, if you need any further help, just ask and if I'm unable to provide assistance, I'm sure someone else will be able to.