When your computer is on a network, the items you share are usually located in your Public folder. However, if there are folders on your computer that you want other people to be able to access, you can share those folders too.
Click the folder you want to share to select it, and then click Share.
In the File Sharing window, select the name of a person with whom you want to share the folder. The Guest option is available only if password-protected sharing isn’t turned on.
Reader to allow the user to open files from the folder but not to be able to save changes or modify files
Contributor to allow the user to open, add, and modify or delete only those files that he or she added
Co-Owner to allow the user to add, delete, or modify any file in the folder
To inform people about the location of the shared folder, click E-Mail, and send the link via e-mail.