Skills are learned abilities such as Shooting, Fighting, scientific knowledge, professional aptitudes, and so on. These are very general descriptions which cover all related aspects. Shooting, for example, covers all types of guns, bows, rocket launchers, and other ranged weapons.

You have 15 skill points to distribute among your skills. Each die type costs 1 point (starting at d4) as long as the skill is equal to or less than the attribute it's linked to (listed beside the skill in parentheses). If you exceed the attribute, the cost becomes 2 points per die type.

As with attributes, no skill may be increased above d12.

Example: Fighting is linked to Agility. A character with a d8 Agility can buy Fightingfor one point per die type to d8. Buying a d10 costs 2 points, and a d12 costs another 2 points.

Savage Worlds Deluxe Edition p. 16