I've only temporarily attached sticky notes, and there are no other markings. There are no sticky note marks left either. I'm selling it because I didn't use it. I hope it can be useful to someone(^^) This is a theory book for music education for young children, featuring fun illustrations. - Title: PREP COURSE - Type: Theory book - Target age: Toddlers - Contents: Practice problems for music education - Illustrations: With character illustrations Thank you for looking.