Internet radio is a great place to go for variety and to get a feel for the different periods of classical music. Then just grow from there as you will find yourself gravitating to certains kinds of music.
As far as the best sites for a variety of classical radio stations I would suggest i-tunes or rhapsody.
This is one of my favorite stations http://www.radioswissclassic.ch/en.
As far as the best sites for a variety of classical radio stations I would suggest i-tunes or rhapsody.
This is one of my favorite stations http://www.radioswissclassic.ch/en.