How do you start using a multi-meter?

To start using a multimeter, first ensure it's set to the correct function for your measurement—voltage (V), current (A), or resistance (Ω). For voltage, connect the probes to the circuit points you want to measure; for current, break the circuit and connect the multimeter in series; for resistance, disconnect power and place the probes across the component. Always begin with the highest setting to avoid damaging the meter, and switch to a lower setting for more precise readings.