Some basics of using the buttons on the site:
can be used to add an image from elsewhere on the internet.right-click a picture on another website and select "copy image address" then paste on your post, highlight and click

can be used to make a hyperlinkbasic: any website with the heading http:// will automatically be a hyperlink, but if it's without the heading like walmart.com it will not be a hyperlink but if you highlight it and click

it will turn into a hyperlink like
walmart.comIf you want a hyperlink to say something else, you can write the text you want to display, highlight it and click

then put type =, and paste the url between the l and ] of the first [url
.]