This chapter covers the basics of googology (which is a study of large numbers). This include Knuth's arrow notation (or up arrow notation), Conway's chained arrow notation, array notations, googol and googolplex etc.
This page covers the basics of the arrow notation (up arrow and down arrow), and the usage of the notation.
Here, this number is a good start to learn googology (hence the study of large numbers derived from that word). And also, I will cover how the suffix -plex works, and some extensions to that numbers.
This page covers some of the popular -illions and their extensions beyond the official English dictionary.
In this page, it covers content about prime counting functions and the solutions behind it.