Open Skill with K
Press K or choose Skill from the main menu. Skills that qualify through your job and level are learned and maxed automatically on advancement and level-up. Read the level requirement, equipment conditions and tooltip before adding a skill to the action bar.
Separate passives, buffs and attacks
A passive contributes through its eligibility rules. A buff is an active effect with a duration and possible equipment requirements. Attacks also have target, weapon and cooldown rules. Read the full description rather than judging a skill by its icon.
Fourth-job class guides group the key skills by role. Weapon identity matters: a skill that works with one weapon setup may not be available after switching equipment.
Build an action bar for the encounter
Keep frequently used attacks and support actions accessible. Use the Action Slot guide for skill sequences, and test a short sequence before relying on it during a dungeon. A skill’s listed damage is not a guaranteed final hit against every target.