You are in for a musical experience you never dreamed of - especially when listening on a good sound system! I strongly recommend that you sample the extensive classical selections on YouTube,. The sound quality is surprisingly good with a quality headphone pair, and you will discover many vintage recordings from the golden era of classical stereo. There will be occasional annoying commercials - but the quality and variety of the music is fascinating.
Of particular interest are live recordings posted from Germany and Japan by the YouTube classical community, usually supplemented by worthwhile comments. I have been particularly impressed with the performances by Charles Munch and the Boston Symphony of works from the French repertoire. Also noteworthy are the amazing live performances of the Bruckner 7th and 9th Symphonies by Sergiu Celibidache and the Münchner Philharmoniker. Happy listening; your musical adventure is just beginning.