These skills are trained in Lagrange at the hidden base. Each one costs skill points equal to the level of the skill desired per rank, and is capped at 25 ranks. All Resistance skills share one skill pool; For example if one has 25 lvl in mining resistance lvl 1 in laser resistance costs 26 skill points.
These skills subtract 1 damage per projectile to all weapons that match the damage type fired upon your ship. This is applied before any ship resists, class resists or aug resists. These skills are useful against multiprojectile weapons or weapons that have fast rate of fire.