I played TW many moons ago when i was young like most here, my question is simple, i would like to know how i can host a public server, i have already downloaded and registered twgs, now how do i rent a server to host a public game ?

If you have an old computer you aren't using, you can install TWGS on it, leave your server running 24/7, and host the game from home.
Unfortunately, I couldn't figure out how to see the IP you would need to share, but hopefully that would take care of itself if you enable the Jumpgate.