I’ve Installed Manjaro, a GNU/Linux distribution on my ThinkPad X220. Why Manjaro and not another Linux? I wanted a beginner-friendly Arch-based distro, and Manjaro more than fit the bill. And I liked how it looks. Why Linux? I have no issue with Windows 10, on the contrary it has helped me get my work done.
Disclaimer: some settings have more or less serious security implciations. So, if you intend to use this post as a guide please read it in full before starting using it and keep in mind it is a simplified and partial explanation: take the time to read the full documentation. SyncThing allows one to do two kind of secure syncing: