New features lead to new diagnotic and testing techniques. This is especially true for oscilloscopes that have changed over the years as new features have been added.
This TechXchange includes content that takes a look at these more advanced techniques to deal with test requirements such as debugging power integrity issues. The What's the Difference: Oscilloscopes TechXchange is another place to look at changes in the field. The TechXchange, Using an Oscilloscope, takes a look at basic and intermediate application of scopes.
The parent TechXchange for this page, Engineer's Guide Oscilloscope Techniques, has links to a range of articles and videos on oscilloscopes. If you have a suggestion or a topic you would like covered, then add a note or comment below.