Well let me try.. when you are on the page that you want to post the link from, go to the top of the computer screen where the address is. Starts out with an http:// ........ Highlight the whole address and then right click , and hit copy. Come back to this group , open for a new (?) message or open the message you want to add the link to, click into the box where you would type a message. Once your cursor is blinking in the box, right click again then paste and the link will be there. Does that help ?
Sharon