Refine bash section on VM setup for Jupyter Notebook

Simplified the introduction and clarified the purpose of the notes. Updated the explanation of setting up an SSH tunnel with VSCode.

Author: robfatland

bash/index.md

@@ -5,14 +5,12 @@
 # `bash`
 
 
-`bash` is the **B**ourne **A**gain **Sh**ell, the entry point for data science. In particular we want
-to dive into setting up a Virtual Machine (VM) on the cloud to host a Jupyter Notebook server via a 
-browser on a local machine (laptop, desktop). This is an important typical 'first step' so let us call out
-two ways to get to a functional build, presuming a running cloud VM:
+`bash` is the **B**ourne **A**gain **Sh**ell, the entry point for data science. These notes
+dive into setting up a VM to get to a Jupyter Notebook server via laptop browser. Two means to this end:
 
 
 - set up an `ssh` tunnel
-- have VSCode set up an `ssh` tunnel
+- VSCode sets up an `ssh` tunnel ([VS Code Server](https://code.visualstudio.com/docs/remote/vscode-server))
 
 
 ## children