Don't want to be one of those people thats all, "this book is the reason learned to read!" .. but.. this book quite literally is the reason I learned to read.
My mother would read it to me all the time, until one night she didn't & told me I should be able to myself. Clearly this tactic worked 'cause in the way~too~many years since I've reread this sucker 'bout a bazillion times, and bought it something like 4 different times (somehow this book kept getting destroyed over time)
The story is adorable, the characters are stereotypes of certain ... ok, they're ALL walking stereotypes of traits (each chara is literally named in this fashion), and the educational bit (you know, be good to others, work hard, blah blah blah) doesn't hammer you over the head so you keep coming back to enjoy the adventure again and again!