Using a Scope for Diagnostics

It is great to find that many have scopes, and they all are superior to mine. Used scopes can be great buys.
I sometimes suggest scope use for trying to diagnose sticky electrical issues on this forum. I get feedback, "I can't afford that!".
You all have proved it is possible, to find scopes.

As time permits, I need get back and write about in detail, how to use a scope. I have much difficulty placing thoughts into written words. I hope you all look over what I write, and help insure things are correct.