How do I learn to use HUMP for gamestates?

[kipo nipo]

I've been looking at the documentation and I just don't understand, I've never been good at comprehending docs though. Most of what I've learned has been through youtube videos, but I can't find anything on humps for gamestates?
How do people understand documentation?
am I stupid?

[zorg]

What exactly do you not understand?

[kipo nipo]

What exactly do you not understand?

I don't understand how the examples given on this page is supposed to be used or how their supposed to work?
https://hump.readthedocs.io/en/latest/gamestate.html

[zorg]

all states (in the first example, menu and game) have their own "versions" of callback functions defined; draw, update, keyreleased, along with some that have to do with the library more than löve's own callbacks: enter (and leave, if it was included)

switch switches from the menu state to the game state.
love.load sets up everything with registerEvents and switches to the menu state.