I've been feeling a little less than in terms of how much I know and understand about the world. What are some topics I should start researching to broaden my knowledge & be able to partake in multiple conversations with different topics?

 

You can start off learning about mental models. Farnam steet  blog is a great place to start. As you learn and make connections, make notes too. Follow your curiosities too. Once when I learned about how bulldogs need c-section, the next time I went to the library and saw In the Womb: Animals by Michael Sims, I had to read it. You can keep building on this journey with more structured reads of online courses on topics of your interest.