Hayday:
I bought the Peter and Jane Keywords Scheme Books for my son, Mark, when he was 2. (That was about 50 years ago.)
I used them to teach him to read. (I was NOT a trained Teacher, then.)
I simply followed their written teaching advice. We read together every evening, before bed, for about 15 minutes. He loved it.
They were Excellent.
When he was 3 he could recognise words, and could read simple sentences.
He, (NOT I), discovered two tiny typographical errors.
I wrote to Ladybird to inform them. They replied that they knew about one error, but no-one had ever noticed the second error.
Laughing, they offered my son a job as a proof-reader, when he was 18.
In my opinion, in my situation, the Ladybird Key Word Scheme, (using the Peter and Jane books), was excellent.
Les Douglas.