create a new start/welcome page for your own "menu" or site map

ANd for the content: make a plan ( top-down from Content-Index or from bottom - up …)

Start with a clean Table of content ( sections or what ever you want top write…

give every section a single extra page page

wriite every section page witj a lot of sub-links
create the links with parenting.

Have a look on the featured sites list ( left menu) how they are build
Have al look on the handbook (left menu) how this is build..

You have to read a lot….

Regards
Helmut

Post Scriptum:
Ask and you wil get help…