Additional resources: How to use an oscilloscope
As educator and Tech Explorations founder Peter Dalmaris says, "the oscilloscope is an amazing instrument that can help you gain a deeper understanding of electronics and how devices work. Beyond learning, an oscilloscope is a very useful tool when you work to verify, maintain, and troubleshoot electronic devices. In addition to the multimeter, it gives you the ability to literally probe a circuit and see it working (or not working). Over time, as you become more proficient in using it, the oscilloscope will allow you to know exactly what is going on in a circuit instead of only guessing." The Tech Explorations website provides an excellent set of tutorials on the subject, available at their website here: https://techexplorations.com/oscilloscope/