Here are the steps to navigate in Command Prompt:

1. Open the Command Prompt on your PC by typing “cmd” in the Windows Search bar and then selecting “Command Prompt” from the search results.
2. Use the “cd” command to change your current directory to the one that contains the file or folder you want to open. For example, "cd C:\Users\Documents".
3. Use the “dir” command to display the details of the current directory, such as sub-folders and files. For example, "dir /w" to show the names only.
4. Use the file name or the folder name to open or run it. For example, "notepad.exe" to open Notepad or "Documents" to open the Documents folder.