Everyone has a different style for posting, so any type of update is fine!
As far as a tutorial, here is what I personally do:
1. Click on the 'Insert Link' icon (looks like a chain) to paste the web address and title of the article. This will insert a link into the post. I click in front of the link, then drag and select the whole thing--using the 'B' to bold it and the 'T' to increase it's size to 18.
2. Then I look for key information from the article to copy and paste into the post.
3. Then I look for one good picture to copy and paste into the post. There are multiple ways to do this, but you can right-click on the picture, select Copy Image Address, choose the 'Insert Image' icon (looks like a rectangular picture) and paste the image address in the tab with the link icon.
4. If an article has a lot of good text and pictures, I just select and copy everything and post it--text, pictures, and all!
Since some people are working with phones, tablets, or desktops, these steps may vary. It doesn't have to look pretty, it just has to get the point across!