A posting guide.
I am creating this post as an example and instructions of how you can use this blog. First of all, there is a better guide in the upper right called help. As I look at it, it would probably do a much better job than I could.
I am going to explain how I posted the picture below.

The problem is that the selector is not letting me size the image so I will have to explore how to do that.
After you are through writing, you can either save as a draft article to return to or publish the article. Preview it so you can see what others will see then go back and log out.
P.S., Yes, this flower is in my garden and I took the picture.
To make a comment, you need to click on the scrap of paper on the upper right corner by the Title of the article it has a thumb tack holding it in place. It will take you to another page with a text box where you can a comment about the posting.
The author then has the ability to reply to the comment the next time they log in, etc.