Gettier problems, radical skepticism, the closure principle - knowledge is one hell of a rabbit hole. Let’s take a look at some fun epistemology!
The Stanford Encyclopedia of Philosophys (SEP) fantastic article on epistemology - https://plato.stanford.edu/entries/epistemology/
The SEP on epistemic closure (& academic skepticism) - https://plato.stanford.edu/entries/closure-epistemic/
Is Justified True Belief Knowledge? (Gettier, 1963) - http://fitelson.org/proseminar/gettier.pdf
Philosophytubes Knowledge Explained - https://www.youtube.com/watch?v=TXlqJvHxVdM
Crash Courses The Meaning of Knowledge - https://www.youtube.com/watch?v=kXhJ3hHK9hQ
On Certainty (Wittgenstein, 1969) - http://prawfsblawg.blogs.com/files/wittgenstein-on-certainty.pdf
Debating Scientific Epistemology (Dougherty, 2016) - https://www.nas.org/articles/debating_scientific_epistemology
The Epistemology of Democracy (Anderson, 2006) - https://www.cambridge.org/core/journals/episteme/article/epistemology-of-democracy/F86F1D124D2E081116611043BD54CBD9