troubleshooting guide updates & initial content

[mca-it]

I want to deploy this to github pages and also to start populate some more content now that I have the basic structure figured out for now.

[mca-it]

I created a secondary story to deal with the passwords. I am not comfortable storing these in basic documentation. This prevents broader sharing of information, and it's ultimately not a common practice to stick passwords into documentation. A best practice is to leverage a password manager or vault system for security and recovery purposes.