Here are some tips on how to get the best possible audio quality at home or in your office using the equipment you have.
Below are a few tips on how to greatly improve the look and sound of your recording:
Framing: Position yourself about an arm’s length away from your computer screen, with the webcam or built-in camera at (or slightly above) eye level. If you have a laptop, this might mean putting a stack of books underneath it. When viewing your image on the screen, make sure that you are fully within the frame, with a little bit of room between the top of your head and the upper edge of the frame.
Lighting: Make sure that there is enough light in the room and that the light source (lamp, window, etc.) is in front of you, not behind.
Setting: If possible, try to choose a background that is not too cluttered or distracting, and most importantly, not too noisy.
Audio: Try to minimize background noise while recording. If you hear echoes or other audio artifacts, consider using headphones
Here is a link that goes into greater detail regarding the above tips.