To make it easy, start off with plugging your old laptop into external monitor. Install RDP, VNC, ssh, ftp depending on your OS. Install tailscale and join the network. Now with another computer, connect to that same network with tailscale and then you can connect and see your laptop screen with RDP. Or if you want VNC you can get a “dummy” hdmi adapter or try installing software for dummy monitor output. After that, use wired ethernet to plug old laptop in router, set to never turn off (recommend removing laptop battery beforehand) and there you go, you have your own personal server you can access anywhere including your phone! From there, look into self-hosting with apps like jellyfin, immich, etc. tons of great resources online.
To make it easy, start off with plugging your old laptop into external monitor. Install RDP, VNC, ssh, ftp depending on your OS. Install tailscale and join the network. Now with another computer, connect to that same network with tailscale and then you can connect and see your laptop screen with RDP. Or if you want VNC you can get a “dummy” hdmi adapter or try installing software for dummy monitor output. After that, use wired ethernet to plug old laptop in router, set to never turn off (recommend removing laptop battery beforehand) and there you go, you have your own personal server you can access anywhere including your phone! From there, look into self-hosting with apps like jellyfin, immich, etc. tons of great resources online.