Every page and post on your site has its own web address, and sharing is as simple as copying it.
1. Open the page or news story on your live site (not in the editor).
2. Copy the address from the browser bar.
3. Paste it into your club's Facebook page, group, or wherever you're posting. The preview picture and title appear automatically after a moment.
Tips
For news posts, the preview picture is the featured image you set when publishing, which is a good reason to always set one.
If Facebook shows an old picture after you've updated a page, it's remembering the old version. Paste your page address into Facebook's Sharing Debugger (search those words; you'll need to be logged into Facebook) and click Scrape Again to refresh it.
Post the news story's own address rather than your homepage, so people land on the story itself.