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...