Start with high-confidence words & language books, then narrow by subgenre or adjacent topics.
Bob Books - Set 1: Beginning Readers Box Set of 12 Paperbacks | Decodable Phonics Books, Ages 4 and Up, Kindergarten (stage 1: Starting to Read)
Bobby Lynn Maslen, Amy Jindra
Busy Little Hands: Food Play!
Amy Palanjian
Baby Sign Language Made Easy
Lane Rebelo
Learn to Read: Sight Words Storybook
Kimberly Ann Kiedrowski
My First Book of Baby Signs
My First Sight Words and Sentences
Wonder House Books