The arch wiki makes certain indications regarding man pages
1 Noteworthy man pages
Here follows a non-exhaustive list of noteworthy pages that might help you
understand a lot of things more in-depth. Some of them might serve as a
good reference (like the ASCII table).
ascii(7)
boot(7)
charsets(7)
chmod(1)
credentials(7)
fstab(5)
file-hierarchy(7)
systemd(1)
locale(1p), locale(5), locale(7)
printf(3)
proc(5)
regex(7)
signal(7)
term(5), term(7)
termcap(5)
terminfo(5)
utf-8(7)
More generally, have a look at category 7 (miscellaneous) pages :
$ man -s 7 -k ".*"