I received the HTML code for including my coaching certification logo. How do I set it up on my Coaches Console private website?

You'll create a new Sidebar Box by going to WEBSITE > PAGES > Edit (from drop down list to the right), scroll down and click ADD SIDEBAR BOX and click on the icon in the content editor to "Source Code" (<>). Then enter the code provided and save the box. Do not try to edit it after you paste in the source code as it will often mess up the code.