host my own bare git repos and not rely on GitHub.

host my own photos and get out of Apple. I have a small cheap Linode VPS (doing nothing right now), a Mullvad client on all my devices, Tailscale on all my devices (doing nothing because I don’t understand what it can do), and a Synology NAS in the closet with the modem/router (none of which I understand). But I’m still in iCloud and iOS for all the photos. Syncthing keeps a handful of my important directories of user-files synced quite reliably. But I have no clue about networking, and I don’t know where to start. I understand desktop Linux (Ubuntu/Pop!_OS) well enough to get myself out of trouble when I mess up or an update breaks. And: it’s a long term process that requires a commitment. In short it’s all about control, privacy, and security, in that order. Gradually, patiently, persistently, over the past ten years and more, I moved from Windows and Mac to all FOSS apps and then full Linux. Tl dr Please point me to a true beginner’s reference/tutorial on networking.

Install plex media server on old router