A Training - also sometimes referred to as a Passive Skill - is a technique, proficiency or dexterity that acharacter may learn and utilize as he or she progresses through the game.
Unlike an Ability, there is nothing "magic" about a Training. Trainings have nothing to do with Logos and do not go back to the psionic powers of the Eloh. Instead, they are earthly proficiencies acquired through military education such as the use of certain weapons, armor and tools.
Each Class has a fixed set of Trainings. Each time a character chooses a new Class they gain the capability to learn the Trainings associated with that Class. Trainings begin at level 0, with zero points assigned. In order to use a Training the character must spend at least one training point to increase the level to "Novice" (level 1). The exception to this is Recruit Trainings, which all start at level 1.
Characters retain their existing Trainings when they choose a new Class, so the complete list of Trainings available to a character is based on their current Class and all their root Classes.
Unlike Abilities, Trainings don't have to be announced to be used. They do not need activation, but instead they are "permanently in effect".
An exception to this rule is Hand to Hand Combat, which must b announced to be used as a weapon.