What is the correct initial step to start driving a manual transmission vehicle?

The correct initial step to start driving a manual transmission vehicle is to press the clutch pedal. Pressing the clutch pedal disengages the engine from the transmission, allowing the driver to change gears without stalling the engine. This action is crucial because it enables the driver to safely start the vehicle in first gear or reverse without risking damage to the vehicle or engine.

Engaging the clutch first is essential for smooth operation since it provides control over the vehicle's movement when the engine is running. If the clutch is not pressed, attempting to engage a gear while the vehicle is stationary could result in stalling or potential grinding of the gears.

While other steps like releasing the brake pedal or engaging the handbrake are necessary in different contexts, they do not serve as the foundational action required to begin driving a manual vehicle after starting the engine.