What I am aiming for is a secure way to host a private home website (for photos, videos, manuals, organization, etc) that would be on a separate wifi network (which is not connected Internet).
Get a router. Setup wifi on the router, maybe even use a different IP range. Don't connect to the internet.
Connect PC to above router.
Install web server software such as L.A.M.P.
Connect to via, and then web server.
Profit ?????