This should be rephrased to: “Satisfying the needs of the searcher in depth”. Followed by an explanation of how different types of content satisfy different needs, but each should do that in an outstanding way. In depth content is great when a searcher was looking for that and often when the intent is not clear from query and context (context as in the context in which the searcher does their search).
Whether you’re launching a new product, building a web presence for your retail location, or starting a dropshipping business, when you’re trying to sell online you have an important problem to solve: how do you get customers to find your store? People who find your online store in a search engine are probably looking for products like yours, so they are more likely to buy something. You can use search engine optimization (SEO) to improve the search engine ranking for your store and help customers find your products.
You don’t want to “keyword stuff” and cram your core keyword and every possible variation of it into your alt attribute. In fact, if it doesn’t fit naturally into the description, don’t include your target keyword here at all. Just be sure not to skip the alt attribute, and try to give a thorough, accurate description of the image (imagine you’re describing it to someone who can’t see it – that’s what it’s there for!).
Having large groups of content that all revolve around the same topic will build more relevance around keywords that you're trying to rank for within these topics, and it makes it much easier for Google to associate your content with specific topics. Not only that, but it makes it much easier to interlink between your content, pushing more internal links through your website.
A navigational page is a simple page on your site that displays the structure of your website, and usually consists of a hierarchical listing of the pages on your site. Visitors may visit this page if they are having problems finding pages on your site. While search engines will also visit this page, getting good crawl coverage of the pages on your site, it's mainly aimed at human visitors.

Incidentally, according to a June 2013 study by Chitika, 9 out of 10 searchers don't go beyond Google's first page of organic search results, a claim often cited by the search engine optimization (SEO) industry to justify optimizing websites for organic search. Organic SEO describes the use of certain strategies or tools to elevate a website's content in the "free" search results.
At our agency, we work with sites of varying sizes, from very large to quite small, and recently, we have noticed a trend at the enterprise level. These sites aren’t relying as much on Google for traffic any more. Not only are they not relying on Google traffic, but also, the sites are getting less than 10 percent (or slightly more) of their organic traffic from the search giant.
As I said at the beginning of the article, more naturally earned backlinks, will help you get more organic traffic and improve SEO. You can suggest your readers to link back to your website by having a small widget at the bottom of your posts. Just as you have the social media sharing links, an embedded linking widget will increase the chances to get more backlinks.
To do this, I often align the launch of my content with a couple of guest posts on relevant websites to drive a load of relevant traffic to it, as well as some relevant links. This has a knock-on effect toward the organic amplification of the content and means that you at least have something to show for the content (in terms of ROI) if it doesn't do as well as you expect organically.
I fall into the group of people skipping Google altogether and going straight to YouTube like you mentioned. Not only is video more engaging than reading text, I love the feature to speed up the video up to 2X the speed so that I can get through more info faster. In fact, I pass up on some videos on websites if there isn’t the ability to speed it up.
A few links down and I've noticed that Brian has a link from Not bad! Turns out that his content has been referenced within one of WordPress's codex posts. If I were to reach out and offer some additional insight, citing one of my articles, there's a chance I could bag a similar link, especially considering they have a 'Useful Resources' section.
Search engine optimization (SEO) is often about making small modifications to parts of your website. When viewed individually, these changes might seem like incremental improvements, but when combined with other optimizations, they could have a noticeable impact on your site's user experience and performance in organic search results. You're likely already familiar with many of the topics in this guide, because they're essential ingredients for any web page, but you may not be making the most out of them. How I Drive Free Organic Traffic To My Online Shopify Stores