Here are the links in case you don't want to watch the video. The one above that I spent time out of my day to create specifically for you. The one I labored on, planned, and created from scratch. The one I spared no expense on, and no money on at the same time.
1. pond5.com (stock footage, after effects projects, audio FX)
2. keepvid.com (download youtube videos and more)
3. type ss after www. and before the Y in youtube. (download youtube videos)
4. vimeo.com/musicstore (free high quality music for your videos)
5. freesound.org (free sound FX)
6. cgtexutres.com (tons of great high res textures for design)
7. vecteezy.com (free vectors)