Edit the
start page content to indicate the most important pages of the wiki, sorted by namespace ranking. Works like a homepage for all other major pages of your wiki. Don't forget to describe in one short sentence the main reason or objectives behind the deployment of the wiki. This start page should have an
index of all available namespaces along with a brief description for each one. You can use a plugin like
indexmenu to automatically create an index of all namespaces.