Objectivism: The Philosophy of Ayn Rand (Ayn Rand Library)

Since you seem to be interested in ideas, in how we know things, and how ideas can impact the degree to which we flourish in life, I will suggest two books to you that made a lot of sense to me.

https://www.amazon.com/Objectivism-Philosophy-Ayn-Rand-Libra...

https://www.amazon.com/How-Know-Epistemology-Objectivist-Fou...