Use your dip stick.

Better check your blinker fluid. Don’t need any tickets.

No coolant warning light? You could Google that on the make and model u have

Leaks should be checked for too.The coolant was empty for a reason.The radiator,water pump and hoses may need replacement.You can turn the heater on.With a warm engine if the heater blows cold there is no coolant.

You need to learn the basics.

You are lucky you didn't have the engine overheat and seize up.

There was probably still enough coolant in it to protect it, but oil and coolant levels, and tyre pressures, are things the car manufacturers generally recommend you check weekly or perhaps fortnightly, depending perhaps on conditions and amount of driving.

They are not difficult to do, and are expected to be done by the owners. There should be an owner's handbook with the car, explaining what's where, levels, tyre sizes & pressures, etc.

Don't forget

Do you see a cloud of steam coming out of the tail pipe when you run the engine? Head gasket needs replacement. Puddles under the engine? Leaky hoses or radiator.

Well as you're getting it checked you should ask you're mechanic for a quick tutorial for a basic check.

Never take that chance. Coolant is important