The first section you need to fill in is the first one, Home page settings.
Tick the AIOSEO box. This means that the information you put into your original home page will be used for the pins. This is the meta description that you were shown how to do in Kyles original site certification training. Don't worry about it too much as if you followed the Training it will be okay. If you are worried you can find it in general settings from the All in One SEO menu.
Add your site Name.
You can add an image if you want a specific one shown. I didn't as I already have an image associated with my site that I am happy with. You will see this later in the process to get Rich Pins.
Next scroll down to the social profile links section. There are others that can be filled in but are not necessary for this process.
Add your Pinterest URL. You can see I have also added Instagram but you don't need to. Click on Person or Organisation. Most of us are sole traders so Person is appropriate.
Next put in an associated name. This could be your name. I personally have a brand "With Grace and Gratitude" and I want this to show on my pins.
Scroll to bottom and Click update. Now you are ready to get your site Validated for Rich Pins by Pinterest.
Go to next page for the final part of the process.