Yeah but more importantly, if you’re in flight and suddenly an amber MASTER CAUTION light illuminates in front of you, read the illuminated word on it (could be on the captain side or the FO side). If it says FUEL you should look at every fuel related panel in the cockpit and find the reason why the light came on. If the master caution says AIR COND you should look at the pressurization panel and so on. Then you can grab the QRH and look for the checklist usually titled with the same name as the light that came on and read through it performing the numbered steps one by one. That, plus the FCOM, is a good way to learn the airplane.
Here, have a QRH