As far as posting pictures and videos, check this out widetrack, Jon put it together: How to post pictures and videos on Hotrodders.com
BTW, HTML has nothing to do with pictures. Jpegs, Mpegs etc. are what you need to deal with. You need to re-size pictures to go under the 3KB size limit for each picture. You can re-size pictures with the software that came with your camera.