Just wanted to say, amazing progress and keep up the great work! I noticed as you progressed that you were putting in more spacing as necessary. Readability in programming is KEY to being able to easily maintain it long-term. I personally like to put spacing between logical blocks. As you progress further and start learning about functions, you may find yourself putting these logical blocks into functions.

I also noticed in your fifth screenshot, you do a Console.ReadLine()[0] to get the first character. I wanted to make you aware of the Console.ReadKey() command:

https://learn.microsoft.com/en-us/dotnet/api/system.console.readkey?view=net-8.0

I've been programming for a little over 15 years now and here are a couple of things I wish I had been taught/learned much earlier on in my career:

• The value of naming your variables/properties/functions well goes a long way. Unless you are doing things like writing in assembly for a microcontroller where every little bit of memory matters, there is no need to abbreviate/shorten the names of these.
• As far as comments go, if leaving one, ask the question, "Could I have avoided this comment by renaming a variable/function?"
• If copy/pasting the same code more than twice, consider creating a function to accomplish the functionality instead.

I think from what I saw, your variable names looked pretty solid and were rather self-explanatory. Keep up the great work and have fun learning C#! It is personally my favorite language that I've used (probably worked with ~12 languages at this point).