The image you see below is called a “silo” structure. It has been around for ages in the SEO world, and is one of the best ways to tell google what your site is about, and to help google give you traffic for the keywords you are targeting.
The idea is, each silo contains a sub keyword category of the main project keyword on top. Each page in the silo only links to the next page in the series, all the way down the silo to the end. Then, the last page links to the first page in the next silo.
Make sure each page is linked with the keyword anchor of the next page.
So an example would be, if the main keyword was “dog training,” 3 example silo keywords would be “dog tricks,” “house training,” and “dog walking.” Each silo would contain articles focused on keywords for those 3 topics.
This can work very well to create a tightly focused site that google loves, bringing you traffic, rankings, and love from google.