As Jane said, you do need to add a recipe to create a new bookmark, but it can be any recipe -- I would suggest adding a Personal recipe (My Bookshelf --> Add Personal Recipes) and just type in a title such as "Test recipe" and click save. That new recipe will now be the top recipe on your Bookshelf and you can add all those new Bookmarks you'd like to create to it. Then the Bookmarks will be there and ready for you when you need them. Eventually, you can delete that "dummy" recipe once you have created all the Bookmarks you would like to add.