Selecting Items
Click to select a single item. Command+Click to select multiple items.
Start dragging outside of the Document and move over two or more items.
To select all items in a folder click on a item and choose Selection > Select All Items in Same Folder
Label items
Click Label icon at top right of documents and folder for Label pop-up menu
Or choose Label from context menu
Or choose File > Label
Rename items
Select item, then click on Name
Select item and press Return Key
Choose Rename from Shortcut menu
Choose File > Rename
Move items to Trash
Click and drag to trash
Select items and press Command-Backspace
Choose Move to trash from context menu
Choose File > Move to trash