Introductory Resources on Webcasting
Tutorials and How-To's
Vlogging tutorial, at http://www.freevlog.org/
Video search engines are mentioned here, at http://searchenginewatch.com/searchday/article.php/3555196
Video-sharing services and Online video networks
You can post your videos, and watch those of others through video-sharing services, often for free.
You can download almost all online videos from this common page here, at http://javimoya.com/blog/youtube_en.php
Online video networks are compiled here at http://www.p2pfoundation.net/index.php/Online_Video_Networks