Setting VPN with Port-Forwarding on VPS

Hi!

Few months ago i had a huge problem with use of my internet connection because of blocked ports, so i decided to search for some alternatives to port forwarding, because i didn't have acces to my router(it was preconfigured by ISP). After few days i have also tried using 4G LTE modem which was useless as well. Finally i search the network, gained some info(BIG Thanks to the community of HackHound) and after those few month i finally did it. 

But the point is, that there is no clear tutorial on the internet how to do all these things step-by-step easy enough that some1 without any wisdom (like me before) could do. So i decided to do a little tutorial for ppl who may have the same problem. Good luck.