How do i make Slow motion and fast motion?

Ok, well i have a camera and a webcam, but i want to learn how to do fast motion and slow motion with the videos, so is there A trick? is there some kind of download thingy i have to download to get it all slow motiony and fast motiony? (i kno those arent words) So if there is a download thing, post the link or if theres not then please tell me how to do it, Thx!How do i make Slow motion and fast motion?In windows movie maker or any other respectable video editing software has an option to slow the video faster or slower