Basic information at this link may be helpful: http://www.good-music-guide.com/index.htm
I also suggest searching around on YouTube and just listen to a random variety of classical music. This may help you discover which classical forms you might prefer (for example, full symphonies versus concertos, small group recordings, choral works, operatic, etc ). It should also help you realize if certain instruments (piano versus strings, woodwinds, brass, etc.) capture your fancy more than others as well as which composers might appeal to you the most. Once you have a feel for those things, you can be a lot more focused in your search for recommendations.
Some of the labels that are geared to classical and that have a reputation for consistently putting out CDs that are exceptionally well recorded include Chandos, Delos, ECM, Erato, Harmonia Mundi, Helios, Hyperion, Mercury Living Presence, Naxos, Reference Recordings, and Teldec.
I also suggest searching around on YouTube and just listen to a random variety of classical music. This may help you discover which classical forms you might prefer (for example, full symphonies versus concertos, small group recordings, choral works, operatic, etc ). It should also help you realize if certain instruments (piano versus strings, woodwinds, brass, etc.) capture your fancy more than others as well as which composers might appeal to you the most. Once you have a feel for those things, you can be a lot more focused in your search for recommendations.
Some of the labels that are geared to classical and that have a reputation for consistently putting out CDs that are exceptionally well recorded include Chandos, Delos, ECM, Erato, Harmonia Mundi, Helios, Hyperion, Mercury Living Presence, Naxos, Reference Recordings, and Teldec.