@oplik0 +1 on the Jitsi stuff. Don't know jack about the code. I have been following that project since its very early days. Impressive and sustained progress, it makes. No flash in the pan, one or two shot wonder preceding an exit strategy, were they. Impressive. 👍
Help installing nodeBB on a VPS
Check NodeBB docs for guides:
You want to run your own VPS which is similar to a dedicated server. I mean you have to choose an operating system (Ubuntu 14.04/15.04, Debian 7/8 or CentOS 6/7). Advanced Linux users can go with Arch Linux.
Do you have any experience in running a server?
OVH offers pre-installed Docker which is one more alternative.
Yes, it's not so hard. Just make sure you know what you're doing. Go with Debian or Ubuntu (based on Debian) and start with hardening and updating a server (operating system).
When you'll have a machine running up-to-date software you can start installing Node.js, Redis/MongoDB and NodeBB.