Standard 20 point buy.
You can only invest skill points in a non-class skill if you have a positive (>0) modifier in the related ability. If you want to invest in a class skill you must have a non-negative modifier (>=0). You can never invest in a skill if you have a negative modifier in its related ability.
You begin play with only a single trait. It must be one of the campaign traits from the List of Campaign Traits. You will earn additional traits as you play. The GM will hand them out as boons for great deeds or memorable RP. The GM will try to match them to your personality, actions, backstory, etc.