Your webcam should be placed on a flat surface, so that your pictures and videos don't appear crooked or skewed.
Some people use a stack of books, or even a tripod == especially if you're interested in aligning your webcam to shoot video of something other than what's directly in front of your screen, which is where many people prefer it to be.
Many times, hardware (including some webcams) will come with no disk for drivers to install at all.
) Unless otherwise instructed, insert the disk that came with your webcam before you plug it in.
Windows will recognize that you are attempting to install software, and a wizard should pop up to guide you through the process.
There can be all kinds of reasons for this, but the biggest is, Windows has a (usually) great talent for recognizing and installing hardware with no software needed.
If your web camera didn't come with a software disc, simply plug it in and see what happens.