How do I create my own bookshelf?

From the book info page, select "Add to bookshelf". Then select "New Bookshelf" at the bottom of the box that appears. Write a name on the bookshelf and select one icon, then select “Save”. Alternatively, select "Select Books" on the home page ("Bookshelves") or from e.g. a search or a themed bookshelf. Mark that book or the books you want to put on a bookshelf. Select "Add to bookshelf". Then choose "New bookshelf" at the bottom of the box that appears. Type a name for the bookshelf and select an icon, then select "Save."