Based on the minimum information you have about classical music, and assuming your primary interest is something that really sounds 'good' just buy a couple of Reference Recordings compilation records where they play some of the most assessible and commonly enjoyable orchestral music by many of the popular classical composers. If you are looking for something more intimate, like small groups, get a couple of the DG recordings of the Orpheus Chamber Orchestra playing compilations. If you think solo instruments, like a piano, are more interesting, you can pick up some Telarc compilation recordings by O'Conner which cover a lot of the popular piano music.
Your starting point is just a WAG for you or us. Just listen to something, and then come back an tell us what you liked and want more of, or what you didn't like and why if possible.
Once you have scratched the surface a little, you might consider buying a classical music guide "All Music Guide to Classical Music" published by Backbeat Books. There you can read about all of the composers and their music and get a better feel for what you might like, or not, for future purchases.
A caveat - getting immersed in classical music is a project, takes time and patience, but is ultimately its own reward. Enjoy the trip......
Your starting point is just a WAG for you or us. Just listen to something, and then come back an tell us what you liked and want more of, or what you didn't like and why if possible.
Once you have scratched the surface a little, you might consider buying a classical music guide "All Music Guide to Classical Music" published by Backbeat Books. There you can read about all of the composers and their music and get a better feel for what you might like, or not, for future purchases.
A caveat - getting immersed in classical music is a project, takes time and patience, but is ultimately its own reward. Enjoy the trip......