The biggest mistake people make after feeling an earthquake is rushing outside or moving around unnecessarily - if you're indoors and the shaking has stopped, staying put is usually safer than panicking into hallways or stairwells. That's the trap nobody mentions enough.
What's worth keeping in mind is that Victoria doesn't get hammered by seismic activity the way other parts of Australia do, so a 4.8 feels genuinely significant here and understandably gets people's attention. But the experience varies wildly depending on where you were when it hit - someone two kilometers from the epicenter might've had stuff falling off shelves while someone else ten kilometers away barely noticed. Soil type and building construction matter just as much as the magnitude itself. I remember feeling a smaller tremor years back while making pasta dough at home, and it was that strange moment where you're not quite sure if the building's actually moving or if you're just tired and dizzy.
For anyone in Melbourne genuinely concerned about preparedness, the practical stuff is boring but real: knowing where your building's exits are, keeping an emergency kit somewhere accessible (water, first aid basics, a torch), and having a plan with whoever you live with about where to meet if things get chaotic. Victoria's not sitting on a major fault line, so this was a reminder more than a warning. That said, earthquakes are a good kick in the pants to actually do the prep work most people talk about but never get around to.