To sign up for YouTube:
Browse to www.youtube.com and click the create account button.
The account you are creating is your ‘YouTube’ account. Next you will be directed to create a Google account or to link your new YouTube account to an existing Google account. Use the Google account we created in step one to keep everything linked.
Start adding videos by clicking “upload”. You can make videos easily with just about any digital camera that has a movie mode. Advanced users can edit videos and create splash screens and effects using tools like Windows Live Movie Maker or Camtasia Studio. Make sure you tag and comment your videos when you upload with a description and a narrative to increase your search ability.

