As a tester in an agile environment, exploratory testing is a quite familiar testing approach. When exploring, you execute as soon as you think of a test. This is one of the key attributes that distinguishes exploratory testing from scripted testing. As you explore, you discover how the software operates, you learn about its quirks and peculiarities. You watch carefully, looking for subtle clues about where there might be a nest of bugs lurking.
Focusing on the most important information to discover, is one of the core skills of a master explorer. It can be quite tricky and difficult. You will need to find the right balance in your exploratory testing between testing “too deep” or “too shallow”.