You can pick up Titles from the building just outside Athens.
There are 4 NPC's there that all have a list of quests that can be completed at any stage through the game.
You can only take one quest at a time from each NPC (i.e max of 4 title quests in your quest log).
There are some very simple ones and then there are some very time consuming ones.
Each Title gives you a different Buff for the period of 1 hour.
Each Title resets every day.
Therefore each Title can be used once every day.
I intend to list here the titles I achieve, how to Achieve it, and its Buff.
Feel free to copy the list and add any Titles you may have or gain that are not included here.