Where to find YouTube channel URL?
Channel is a way to watch YouTube videos. You can browse or search for YouTube channel here. Once you have found your channel, select it, and copy channels URL.
For example, you may find channel with such URL address: http://www.youtube.com/user/TEDtalksDirector.
Where to find YouTube user name?
Just sign in into your YouTube account (or create new one). Your YouTube account name will be written on top of the YouTube page. You can also see it in title field on this page.
What is FLV?
FLV is video format usually used in Flash players and YouTube. See Wikipedia article about FLV.
What is RSS and feed?
It is a format to publish frequently updated information. See Wikipedia article about RSS.
What is YouTube?
It is video sharing site. You can check it here.
What is podcasting?
It is a way to receive some news on a regular basis, often via RSS. See Wikipedia article about it.