Can’t find shared files

If you tick File Sharing in System Preferences’ Sharing pane, other Macs on the same network should show yours under Shared in the sidebar of Finder windows. By default, they can only see the Public folder for each of your Mac’s user accounts, but you can add others in this pane.

If your Mac doesn’t show up, use Go > Connect to Server in Finder on the other Mac, enter your Mac’s address (say, smb://192.168.0.7) and click Connect. PCs can also access shared folders using the AFP or SMB protocols and your Mac’s IP address.