Keep it all to myself
Tell my friends about it and recommend it to them
Talk to teachers about it
Write a short informal essay to express my feelings
Buy book-related accessories
Watch the book-based movie(if there is any)
Write to the author(ask questions, etc)
Check out what other people think of the book on social media( facebook/twitter/weibo/tumblr/douban/qq/instagram…)
Draw a picture about it