Built-in computer microphones generally aren’t as high quality as the ones in smartphones, but you can always pair them with a good external microphone to get decent sound. Consider recording in a room with lots of books, carpet and maybe even pillows behind your computer.
While most people know to go somewhere quiet and speak a bit away from the microphone, subtle things like the popping sounds at the start of P's and B's can ruin audio quality or cause the average volume to be raised / lowered because of the spikes in volume. Knowing ahead of time how to reduce those sounds can save hours of editing and re-recording.