Regardless of your level of experience, there are certain tools that all electronics hobbyists and makers will find are “go-to” tools.
Test equipment and tools are probably the most important investment a hobbyist can make.
These tools can tell you how something works (or doesn’t). They let you explore the inner workings of a circuit or gadget. They enable you to take something apart and put it back together (in the case of tools such as screw drivers etc.). Test equipment and tools help you create. Testing also collects data.