Take the 10 pillar topics you came up with in Step 1 and create a web page for each one that outlines the topic at a high level -- using the long-tail keywords you came up with for each cluster in Step 2. A pillar page on SEO, for example, can describe SEO in brief sections that introduce keyword research, image optimization, SEO strategy, and other subtopics as they are identified. Think of each pillar page as a table of contents, where you're briefing your readers on subtopics you'll elaborate on in blog posts.
The world is mobile today. Most people are searching on Google using a mobile device. The desktop version of a site might be difficult to view and use on a mobile device. As a result, having a mobile ready site is critical to your online presence. In fact, starting in late 2016, Google has begun experiments to primarily use the mobile version of a site's content42 for ranking, parsing structured data, and generating snippets.
A quick search for “SEO ranking factors” will give you all of these answers and myriad others. There is a lot of information out there. And the reality is, while there are likely hundreds of variables working together to determine final placement, much of what is suggested is guesswork. And certainly, not all ranking factors are relevant to every business.
Since heading tags typically make text contained in them larger than normal text on the page, this is a visual cue to users that this text is important and could help them understand something about the type of content underneath the heading text. Multiple heading sizes used in order create a hierarchical structure for your content, making it easier for users to navigate through your document.
Early versions of search algorithms relied on webmaster-provided information such as the keyword meta tag or index files in engines like ALIWEB. Meta tags provide a guide to each page's content. Using metadata to index pages was found to be less than reliable, however, because the webmaster's choice of keywords in the meta tag could potentially be an inaccurate representation of the site's actual content. Inaccurate, incomplete, and inconsistent data in meta tags could and did cause pages to rank for irrelevant searches.[dubious – discuss] Web content providers also manipulated some attributes within the HTML source of a page in an attempt to rank well in search engines. By 1997, search engine designers recognized that webmasters were making efforts to rank well in their search engine, and that some webmasters were even manipulating their rankings in search results by stuffing pages with excessive or irrelevant keywords. Early search engines, such as Altavista and Infoseek, adjusted their algorithms to prevent webmasters from manipulating rankings.