I see three on points to spend but it does not say what they are.

Click on the purple skill book.

Well you clicked on the purple skill book and there's no skills to learn. How do you learn the good skills? Access to new Skills is granted from one of the following methods:
-Attached to items you find as loot or buy at the vendor
-Earned at random for leveling up
-Quest Reward from Wall Face
-Drinking a potion that grants a Permalearn skill
-First Touch of a Demon Shrine (Only found in Game+)
-Added to an Item via Scroll use
The bulk of the time it's going to be from the first in the list: Items. To permalearn a skill you must be wielding/wearing an item with that skill. You can then spend a skill point on it. After that you can discard the item. Some skills are 'soft' gated and improbable to find at early/low levels.

You gain a skill point every other character level or by drinking a Brain Freeze potion.

Quoted from my skill guide: https://gtm.you1.cn/sharedfiles/filedetails/?id=2914373977

You can also press either 'b' or 'j' to bring up the skill book.

All key binds are listed in the start up window. Most just click past without noticing.
https://steamuserimages-a.akamaihd.net/ugc/2465249330181957067/2047C5A850B5EF206CD7F645BA489278BF37226D/?imw=5000&imh=5000&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false