I am from a Biology background. To learn command line, GitHub, and Linux I have installed Ubuntu on Windows 10 laptop.

When I run the app message pop-up

    To run a command as administrator (user "root"), use "sudo <command>".
    See "man sudo_root" for details.
    
    name@LAPTOP-xxxxx:

when I look the location running `~$ pwd`

it shows `/home/name`

1. Using the ubuntu app — how can I move to D drive and different folders in D drive?

2. Also, what is the difference between running Ubuntu on Windows and **Windows Command Prompt** (cmd.exe)? Are they similar?

3. Can I run command line script on Ubuntu and cmd?

I tried to Google these. however unable to find a friendly answer.

I would be grateful if someone shares what is happening when running Ubuntu on Windows and any relevant tutorial if possible.
Windows drives are mounted under `/mnt`, for example:

    ls /mnt/c

The Linux subsystem can be thought of as a separate, simulated Linux environment. 

You cannot run Linux commands on Windows. But because the Linux is simulated within Windows, you can start some Windows programs from it. For example typing:

    explorer.exe . 

in the Linux bash, will open a Windows Explorer instance that shows the current **linux** directory. Very handy shortcut.

Or, if you have Visual Studio Code you can start it from the Linux Subsystem just by typing `code`. The newly opened Visual Code editor runs in Windows, but it is connected to Linux, code that is executed from the editor will run under Linux. 

In general you should think of the two as separate environments that only share files.
