This is one of the best and easiest 2oOLS built right into Windows 7, 8 and 10! The Snipping Tool. You can grab content and paste into Word, PowerPoint, Outlook and more. It offers some simplistic annotative features as well. They say a picture is worth a thousand words… so snip it and send it! Directions for your MAC.
This video shows how to do this in Windows 7. You can search for the snipping tool in Windows 10 as well. Click the start button (window) / start to type snipping into the search box, notice that Snipping Tool pops up, click to open. OR, right click it and pin to taskbar to access easily from your taskbar later.