I did this too. I bought the 2021 version of World Book, specifically. When my kids ask questions, we use the encyclopedia to find the answer. My oldest taught

I did this too. I bought the 2021 version of World Book, specifically. When my kids ask questions, we use the encyclopedia to find the answer. My oldest taught me how to use the subject index. It fits in two milk crates. I find it comforting, as I grew up with a set, too. Except, the set I had growing up was much older.