Here is one page - of things he knows and you should too (transcribed below):
Lightning can hit trees so be careful!
Gravel can hurt
There are more than 10 states
Not all berries are edible!
Not all dogs are nice
Not all people like Minecraft
Not all kids have parents that are 2
! ? . These are the marks
ABCDEFGHIJKLMNOPQRSTUVWYX and Z - letters!!!!!!!