Learn a skill from random pool?

[rechronicle]

Hello!
how to make different choices each time player access it, and that can be used to learn a random skill?

So, it will take a 3 random skill from a range of skills, and then put it in 'Show Choice'. The 'Show Choice' will change with each new skill put in there. I get the picture, but not sure how to implement it. Any suggestions will help.

Thanks!