We have many video's and blogs to watch and read.
If you log in and click "Weekly Calls", scroll to the bottom of the page and watch the 2 oldest videos called, "Research, Covers, Keywords, Listings" and "KDP Research for Low Competition Niches".
Also we have in depth articles in the Blog Section, on the main page at www.bookbolt.io.
When inside of the Studio, you can click on "Help" and then click Book Bolt Knowledge Base.