when you said about the camera, due to the fact that I don't have much money, would using the webcam on the computer be a good source as well
Using a webcam is not a bad idea if the said webcam is even half-decent.
I know this is maybe personal preference, but I simply cannot stand watching video where the audio and video are not in sync. Easily happens when you're using either old webcam, or in low lightning condition where the camera goes for longer exposure (that's the term, right?) to make the picture more clear and visible.
Many laptops have decent webcameras when used in daylight, but in the evening the amount of light decreases and the video quality drops tremendously (ghosting, sync issues, etc...). Nowadays many cellphones have pretty good cameras, and they tend to ourweight webcams especially when there's little light.