This series is good for learning colors. It helped my child with the colors. The writings inside are too difficult for someone learning the colors. The writings and vocab inside are good for a 5 year old while usually 2 year olds learn the colors so by 5 it is usually useless to buy color books but we can use the series for both our 5 and 2 year old kids. We are only using the covers to teach my son the colors.