Maybe something like a monthly news letter would be a bit more realistic to start with.
People writing articles and some one editing it and sending it out on a monthly mailing list in pdf or html format is a lot more possible than trying to get people together and film interviews etc…
It would be affordable to do, as in anybody with notepad could type up their article and send it on to said editor, instead of all the equipment, software, and transport costs involve in filming interviews.
the newsletter could be set as voluntary to start with until it eventually became something bigger to warrant its own website and employed staff. Only then could you consider the likes of webcasts and streaming videos.
I don’t mean to be a “nay sayer” but in my opinion a monthly webcast would be something to work up to, not begin with.