Bookmarking a resource saves the resource to your profile page for later and does not count as a resource license. You can bookmark as many resources as you want. This is similar to your “Wish List” on TpT.
To access a resource you've bookmarked, just go to your “Resources Bookmarked” page, then select the resource title to go to the listing. Then, click the green "Access Now" button to access the resource. If you access a resource you’ve bookmarked, it will then count as a resource license.