A system admin needs advice

Hello everyone,
I'm a sysadmin and I have an idea for a killer tech game.
It will have very little animation. Scrolling text and maybe a progress bar.
It's a combo of the hackers game on Google play and watch dogs.

I don't have any funds to hire, so I will need to learn everything myself.

I know powershell and can read code.

The question is, where do I start?

 

I would recommend starting with https://unity3d.com/learn . Also, a good book on C# might be advised.

 

Since you already know coding, you should checkout my book Unity in Action. The second edition was pretty much just released!