When I was growing up, my family always had World Book Encyclopedias. My grandfather was a salesman for them (and later a regional sales manager), so he always made sure we had a relatively recent complete set.
I would spend hours and hours on some nights, just reading through the books. They fascinated me.
By the time I was in sixth grade, I was reading at college level. The teachers didn’t know what to do with me. One time that year, I took Isaac Asimov’s Foundation Trilogy as my subject for a book report. I couldn’t understand why the other kids and the teachers didn’t feel the same way about those books.
By the time I was in high school, the dedicated bookcase for them got moved into my bedroom. I was well above average for my academic performance in high school.
In college, I helped pay my way through school by working at the main library on campus, shelving books and various other tasks. I ended up working there for over five years, as I took a lighter class load to try to help keep my grades up. And I was on the Dean’s List, with a GPA above 3.5, etc….
Encyclopedias taught me how to read, and how to study, and how to organize my writing.
I think I probably owe much of who and what I am today, to those encyclopedias.