Bookmarking a resource saves the resource to your profile page for later and does not use 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 “Bookmarks” page, then select the resource title to go to the listing. Then, click the "Access Now" button to access the resource. If you access a resource you’ve bookmarked, it will then count as a resource license.
All resources included in the Flex Catalog will have a “Flex Catalog” badge and will not require the use of an allotted resource license. To use the resource, simply click “Open in Viewer,” “Open Resource,” or “View Files.”