Don't Understand any line of code...

It takes a little time to get the hang of it so keep at it.

Think about starting off with coding HTML to build web pages. It will get you used to typing code and thinking in an analytical way. Then you can go back to your game development or move up to more advanced web development courses like CSS and JavaScript.

Maybe you can find some projects for building web based/browser games. It might be a fun way to get started and the browser games would work on any computer.

Keep exploring and learning, eventually it will "click."

Also, check meetup.com for gave development and Unity meet-up groups. The meetings are a good way to learn and meet other people who are eager to help.

You get the hang of things yet? Later lessons delve more into C# (looking at the track). That's where you will really start learning actual development. This is more just to get you going with Unity itself and getting a basic understanding of the things that go into building games using a basic example. The best thing to do is to keep practicing.

Another comment below says it'll just click. That's very true. It takes a couple of months of slamming your face on the desk but there will come a point where it literally clicks. You go from hitting your head on the desk because you don't get it to hitting your head on the desk because what should be working doesn't. But at least you have an undestanding lol.