The phrase "free bookmark" means you can get a small paper or cardboard strip to put in your books without paying any money.
Sentences with «free bookmark»
Another recommended distributing free bookmarks and posters that come from book clubs or giving free books obtained with book club points. (educationworld.com)
I'll send a free notecard with my book covers and a link, or a couple of free bookmarks printed with my latest book cover.» (peneloperedmont.com)
Hand out free bookmarks featuring your cover art or give away other inexpensive SWAG items. (selfpublishingrelief.com)