1. To create new folders or collections, click the "new collection" icon in the left corner of the Zotero pane.
2. Enter a name for your collection.
3. Create sub-collections by right clicking on a PC or control-click on a Mac and choose New Sub-Collection.
4. Copy items to other collection by selecting as many items as you like and dragging and dropping them to the new collection. Or right click and click "Add to Collection."