When you are making your character, you get every skill rank listed for your culture, for no DP cost. For example, as a Nomad you get 4 ranks in Animal Handling, 3 ranks in Riding, 1 in Perception, 1 in Tracking, etc.
If you are making up a new unique culture, you have 80 DP to allocate to skills for that culture, using the costs in the Cost column of the culture table. But, again, that's not applicable if you are just making a character.