I think it is Plain Folks. I'm not 100% on this but I do think it's plain folks.
Answer:
You can find quotes at goodreads.com for this title. If you can't find them, two quotes are "There’s no such thing as plain text; there are only codes you understand and codes you don’t." -Tom Pollock “Sometimes, courage is just knowing what you're more afraid of.” -Tom Pollock
Answer:
the big text makes it easier for children to read
