Currently, online documentation for static cache is limited, only describing the settings in staticcache.ini:
The reference is slightly outdated, missing settings like CachedSiteAccesses.
A much more thorough document is present in <EZROOT>/doc/features/3.6/staticcache.txt
Also, a very important step - VirtualHost rewrite rule to prevent recursive caching - was documented in EZROOT/doc/features/4.0/static_cache_user_agent.txt
A documentation page could be created for static cache, with relevant information from both these documents.