I was just wondering if I could use a normal webcam that is NOT officialy Raspberry Pi endorsed?
I am using a Raspberry Pi 3 Model B
Yes it is possible to use a standard USB webcam with the Pi.
For example if you are running Raspbian:
sudo apt-get install fswebcam
You can use the webcam by running:
This will take a jpeg picture and save it with the filename image.
-r tag to specify the resolution of the image:
fswebcam -r 1280x720 image2.jpg
For more information on this you can check out the official documentation.
Quick side note:
There isn't any officially endorsed by the Raspberry Pi Foundation webcams as far as I am aware. Although you might be interested in the Raspberry Pi Camera module which connects via a ribbon cable to the camera connector on the Pi. This is a product that was released by the Foundation.