If you want to save a SINGLE page or more the steps are simple.

You accomplish this by deleting from the page tab all the pages you don't want. Select the page(s) you don't want then hit your delete key or go File > Delete Once you have all the pages you don't want removed and are left with the page(s) you do want. Complete the process by Saving the file. File > Save. Now you should have a new pdf with just the page(s) you wanted. You can send this file as an attachment to friends and neighbors you may want to share a single article with.