Once you have a designated pillar page, update the links in the related content pages you’ve identified to form a “cluster” around the pillar page. Every post in the cluster set needs to be linked to at least once with the same anchor text (the part that is hyperlinked) so that a search engine knows it’s part of a topic cluster. Over time, monitor the pillar page's ranking within search engines. When your ranking stabilizes and you’ve grown your authority on the topic, you can take the chain of clusters further by linking out to a related topic. A natural follow up cluster to the “content marketing” topic could be the next step in the content marketing process, such as how to create content that converts.
For an excellent source on English composition, check out this classic book by William Strunk, Jr. on the Elements of Style. Contents include: Elementary Rules of Usage, Elementary Principles of Composition, Words & Expressions Commonly Misused, An Approach to Style with a List of Reminders: Place yourself in the background, Revise and rewrite, Avoid fancy words, Be clear, Do not inject opinion, Do not take shortcuts at the cost of clarity, … and much more. Details of The Elements of Style by William Strunk, Jr. partially available online at . Note: William Strunk, Jr. (1869–1946). The Elements of Style was first published in 1918.