Here is some footage of knowledge system and how you unlock new abilities:
"ABILITY LEARNING
On Fractured, magical and combat abilities are discovered and learned through a unique process involving exploration, combat, gathering, crafting, and a little bit of waiting time (including offline time)."
"STEP #1: DISCOVER & QUEST AROUND
When you open your Character Abilities window for the first time, almost all the spells listed in each School are in an Unknown state.
When an ability is Unknown, you character doesn’t know anything about it (surprising, eh), including its effect and what are the tasks required to unlock it – you’re only able to catch a glimpse of its icon. How to discover an ability? Just play the game! Travel, fight, gather, craft – whatever you fancy. As soon as you accidentally perform one of the tasks required to unlock an ability, it will switch to Discovered state.
Once an ability is Discovered, you get to know everything about it: what it does, what’s the cost to use it, and – mostly importantly – what are the tasks that have to be performed to be able to start studying it. Some examples of such tasks are:
Find, interact with, or kill specific creatures.
Kill some specific creatures in a unique way.
Find, collect or refine some amount of a specific resource.
Consume X units of a specific item.
Be hit X times by a specific spell.
Perform a specific combat action X times.
Explore one or more world locations.
Rest in a specific location.
Craft X units of a specific item.
Die in a specific way.
Ability learning tasks never require you to repeat the same action for hours. Instead, they’re designed encourage you to explore and travel – rewarding cleverness and bravery, not time spent grinding.
All abilities have a total of 6 tasks associated to them, but it’s enough you complete 2 to turn the ability to Ready To Study – and that’s when the second part of the learning process begins."