How do I add my Unity 5.5.2 game to a website?

All the answers I have found are for older versions so their tutorials, or directions use options no longer available. I have tried here in answers, Google and YouTube but no luck anywhere. I'm new and just finished my first tutorial game, Roll A Ball. I also built a Wix website to put it on so that family and friends can see what I've done and watch my progress as I learn more and post new games. Unfortunately with the tutorials they didn't tell a lot of the extra things you need to know, EX: having to get a program like Diffmerg and Inno Setup, etc. Fortunately all the other issues I ran into I eventually found answers to through research but I can't find anything about what to do after the game is done and you want to share it. I know I read somewhere in my searching someone suggesting "Just send the file" but it is to big and there are too many people to send it to. I know there have to be other new people out there with the same problem, so could someone please help all of us that are just starting out and basically know nothing. Thank you for any assistance, it will be greatly appreciated.