Resources you have saved to Mindstone can be handled in three ways: deleted, moved to a Workspace, or to your Archive.
Your Archive is where you can keep resources you have finished for long-term storage. That way you can rest assured that you can revisit a resource you've already gone through in the future. Workspaces and Archive are the closest things Mindstone has to "folders".
Where to find the Archive
On iOS and Android
Tap the 'Workspaces' button in the bottom navigation menu.
Tap the Archive icon in the upper right hand corner.