SILO ARHITECTURE IN A WEBSITE STRUCTURE
All ranking and seo tehniques matters, more or less, but a strong SILO Structure of your website will help you even more, now when meta-keyword tag was disabled by Google Algorithm.
How a SILo arhitecture should look like? Imagine a tree but upside down. The root is the Home-page,all branches are pages and all leaves are posts.
If you adopt this style , not only as sub-menu items , but as child-pages linked to homepage , and posts linked from child pages and linking back to them.