I can also personally vouch for Teach Your Child to Read in 100 Easy Lessons. It accelerated my ability to teach my kiddo to read by doing exactly what I wasn't an expert in - designing a reading pedagogy. We worked though the book in pandemic kindergarten and I can't help but attribute his current reading success to the work we did back then. It was a silver lining in a time of uncertainty and the memories I have of us working through the book together are memories I'll cherish for the rest of my life.