All Music Guide
The best online resource for information on recorded music, music artists and
excellent articles on music history.
Best of the web
google.com
It goes without saying that google is the first site you need to
visit to find anything on the web. Try the "more" link at the
top because there are lot of very useful tools behind the
deceptively simple web page design.
amazon.com
The best place to find any new product you're looking for (like
books, music and DVD/Bluray sets.)
wikipedia.org
The most comprehensive online encyclopedia you'll find anywhere
on the planet.
ebay.com
The #1 online auction site to find anything from the secondary
market (though you have to be careful about pricing and the
seller.)