I came upon this today and thought I'd pass it along, since it provides some good advice, especially for those new to the hobby --
Operating a vintage TV*** -- some things you should know:
http://www.radiolaguy.com/tv.htm
Operating your vintage radio:
http://www.radiolaguy.com/info/Operating_your_radio.htm
Operating your vintage radio -- (small AC/DC types):
http://www.radiolaguy.com/radio.htm
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***Though analog TV is part of the history books, I've heard that it is possible to use a digital converter box, even with some of the very old sets, with proper adapters.