I've played Sylestia for a while, and just got my first title. i don't like it. How do I get other titles that I might enjoy better?

At the moment, there are a few available at the moment through trick-or-treating.

quote from the main post:
"Go Trick or Treating

http://www.sylestia.com/festival/festival_fall/trick_or_treat/

Trick or Treating is back! Visit all fellow Sylestians with your best Trick or Treat. This year, Hosts can then either give you a complimentary Piece of Candy or give you a personal item (from a list of specific items) from their Inventory. As a Trick or Treater, your goal is to collect each of the 21 unique Pieces of Candy. Once you have at least one of each, you can turn them into a Handful of Candy, which can be opened for awesome rewards, including a special unique Themed Pet!

You can view the status of your candy collecting by viewing your Trick or Treating profile. Similar to last year, unique Titles are available by participating. They are as follows:

-Trickster: Trick or Treat 500 times as a Visitor
-Candy Dispenser: Hand out 500 Pieces of Candy
-The Sweet Tooth: Create 5 Handfuls of Candy
-The Kind-Hearted: Hand out a Personal Item
"

There might also be a title given out in one of the official forum games and in the egg auction which is to come. I believe there is also a title you can get from the arena in the 3rd zone available from exploring. Other titles besides these are obtainable through other festivals throughout the year.

I remember a user compiling a list of all the available titles as well as how to obtain them, but sadly I don't remember where it is.

Most titles are obtained when you fulfil certain requirements during festivals, like trick or treat for this fest. Or the mojo one.

The titles that can be obtained outside of festivals at the moment would be the adept and aspiring gladiator. Those you can get by fighting and winning a certain number of times in the arena (3rd region)

You'll just have to keep an eye out during festivals to see what titles are available. Sometimes official forum games during festivals will offer a chance to earn titles as well.