Another endorsement of 100 Easy Lessons!!!
We used that for each of our children. Book was in tatters and had a “well-used” look when we finished.
Can’t tell you how satisfying and rewarding that was.
BTW - without even knowing it, when I was 9 or 10, I was teaching my younger brother to read. The book I would read to him, The Cat in the Hat.
My kids were very pleased with Dr. Seuss books. They also loved Ricky Tivey Tavey, and The Frog and the Toad.