I'm at the beginning stages of a new site. I need something that would allow me to have the following:

• - static site
• - good forum
• - allow people limited access to have their own page and post info, pictures and video
• - be pretty easy for me to get going rather quickly, easy to learn

Any suggestions on a platform that might best match my parameters? WordPress? Joomla? Other?
All advice and feedback is much appreciated!