Perks and Slots

Purchase Then Activate
Reaching a level makes a perk eligible to buy.
Buying keeps it unlocked; activation uses a slot.
Unpurchased or inactive perks do not grant their bonus.

Choose Your Slots
One slot opens at 20, two at 50 and three at 80 for each skill.
Deactivate a perk to free a slot.
After activating, wait 15 minutes before another activation.

Choose by Effect
Read the effect, not just the fantasy name.
The perk reference gives a practical example for every perk.
Deactivating does not refund its purchase.