These videos focus on the exact tactics and techniques for research identified in the webinar as necessary for finding semantic relationships. They do not discuss why holistic, comprehensive content is important. For the overall strategy for websites in the age of Hummingbird, please look for the link on Slideshare of the webinar which I’ll post here when it’s up by SEMrush. Or, see some of the other posts on this website about related keywords vs. topic research.
This second video is about finding the gaps using WordPress cloud software. Much better to watch video #1 first, unless you’re sure you already understand the methods to pull data for the gap comparison.