This is an old revision of the document!
Unlike most Gear, armor cannot be changed during the Strategy Phase. Armor can only be equipped or removed outside of scenarios. The DM may note if it is impossible to change armor even outside of a scenario, particularly for more complex heavy armors that can take some time to properly don or remove.
Training is required to equip armor. Armor comes in light, medium, and heavy classifications; training in the labeled classification is required to equip armor. Armor training is typically provided by a Class.
For more information, see Player's Guide Chapter 7: Gear and Wealth.