My question: For internal links between blog posts, what are the most important pages to link from and to, and why?
For example, I have been adding internal links on high traffic posts to any related posts I can come up with, with the intention of keeping visitors on the site longer. Doing this on low traffic posts for this reason would have very little effect, due to the low traffic.
Many guides say that internal linking to a page boosts the target page SEO value or passes link juice from a high value page to others, but as with most SEO advice, that advice sounds outdated. I've read specifically that Google no longer counts internal links towards SEO value, as of one of the last major updates.
I've read that I should add links from old posts to the new one to "help Google index the page", but I already have a sitemap, and my posts are indexed very quickly.
Any other reason I should focus on another internal linking scheme, either immediately or whenever I create a new blog post?