These principles for helping your babies and children learn are based on Glenn and Janet Doman's books 'How to teach your baby to read' and 'How to teach your baby Math'
Don't bore your child especially by going too slow
Be relaxed, don't pressure your child
Answer all your child's questions seriously
Have one to one time with them to read (without any other distraction (like the TV in the background)
For more details: Early childhood education blog
introduction video on the institute for the achievement of human potential