Craft a Book and Quill using 1 Book, 1 Ink Sac, and 1 Feather
Place the Book and Quill in your hotbar
Select the Book and Quill in your hand
Right-click or tap to open the writing interface
Type your text into the pages
Use the page controls to add or move between pages
Sign the book if you want to finalize it
Place the signed book into a lectern, chest, or inventory if needed