
to the site, Martie!
You can post a reply to a thread by scrolling to the bottom and typing into the "Post a reply" box at the bottom of the last page of the thread.
If you wish to quote a post, though, then you should see a little "Quote" link in the bottom right of the post, just to the right of the thumbs-up icon, acorn and bookmark icon.
Please let me know if you need further assistance.