So last night I turned on one of my lights by the switch and it popped and I saw an ember like spark, I quickly turned the switch off and panicked. I checked the breaker, but it did not tripped anything there, so I put a tape on the switch so that no one can flip it on in case. After reading and searching around google, I tried to see if its only the bulb, same thing happened, a pop and a spark. I tried the bulb on a different socket that is known to work, to my surprise the bulb works like nothing happened.

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What could be the culprit and why? Also, is it safe to turn everything off in the breaker except the main one since I cant read the diagram because the writing on the sticker faded? Do I need to call an electrician or it is safe for an average joe like me to change the fixture given that I turn off everything in the breaker? As much as possible I dont want to call a professional if its easy enough to do it since money is tight right now.

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Thank you all