i decided a while ago to post all about my books on my twitter, but i'm not sure how to attract people into my account , ant advise ?
Maybe post some cool sentences from your book from time to time? People in twitter like to rt meaningful lines and stuff.You can also share related pictures or some drawings too.
Sharing quotes from your book would be a good start. You can spice them up and turn them into quote images with websites like https://www.canva.com/!
Search for literature related tags to find other writers on Twitter and engage with people who have content you genuinely like. It's really nice to build and foster a creative community.