Finally Taking The Plunge

Okay, I'm going analogue and I feel like a babe in the woods. Is there a primer somewhere that I could read to get me up to speed? What are the choices in entry level systems or are there too many to mention?

Current system:
Levinson 383 integrated amp
Modwright Sony 9000ES SACD
Tyler Acoustic Linbrook monitors
Nordost Red Dawn interconnects/speaker cable

Thanks in advance for any suggestions