add OneDrive notes to episode2 and instructor notes

episodes/02-navigating-the-filesystem.md

@@ -21,6 +21,11 @@ exercises: 10
 
 We will begin with the basics of navigating the Unix shell.
 
+:::: instructor
+
+For notes about OneDrive, see instructor notes.
+
+::::
 Let's start by opening the shell. This likely results in seeing a black or white window with a cursor flashing next to a dollar sign. This is our command line, and the `$` is the command **prompt** to show that the system is ready for our input. The appearance of the prompt will vary from system to system, depending on how the set up has been configured. Other common prompts include the `%` or `#` signs, but we will use `$` in this lesson to represent the prompt generally.
 
 When working in the shell, you are always *somewhere* in the computer's file system, in some folder (directory). We will therefore start by finding out where we are by using the `pwd` command, which you can use whenever you are unsure about where you are. It stands for "print working directory" and the result of the command is printed to your standard output, which is the screen.
@@ -238,4 +243,3 @@ ls -lt
 
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-

instructors/instructor-notes.md

@@ -132,6 +132,19 @@ Whatever you use, please *test it yourself* on a Windows machine *before* your w
   ```
 
   ... will always put someone on their desktop. Have them create the example directory for the shell exercises there so that they can find it easily and watch it evolve.
+
+#### Windows OneDrive Notes
+
+Windows OneDrive might be called 'OneDrive' or have be appended by a local name such as "OneDrive-campus".  
+
+Examples using Git Bash
+
+To check: 
+```base
+$ ls -la OneDrive
+
+$ ls -la OneDrive*
+```
 
   - On Windows, Microsoft OneDrive may appear in the home directory list. Desktop is often found inside the OneDrive directory.