Skills

 represent your character's ability to accomplish tasks not (directly) related to murdering living, beating things with extreme prejudice (but, for example, convincing them to do the same to one another). Skills listed here are Consolidated Skills, where core Pathfinder skills are aggregated into skill groups, to increase the utility and flexibility.

The amount of skills a character gets per level is based on the class and then gains 1/2 of the Intelligence modifier. For example, an int of 12 (a +1 bonus) would grant 1 skill rank at 1st and 3rd level but not 2nd or 4th level and so on. an int of 14(a +2 bonus) however would grant 1 skill rank every level.

Each class has a number of favored skills, called class skills. It is easier for your character to become more proficient in these skills, as they represent part of his professional training and constant practice. You gain a +3 bonus on all class skills that you put ranks into. If you have more than one class and both grant you a class skill bonus, these bonuses do not stack."