Looking for a good place to start

I want to enter into a tube/analog setup but have no idea where to start. What is a good reference to start understanding tube components? I remember listening to music as a kid on a Marantz system and it being very warm and full. A sound that I just can't seem to get from a CD. I'm sure its doable but I sort of have an attraction to vinyl. Something in me just wants to go that way. I'm here 2 or 3 times a day looking at turntables, waiting for the right moment to pounce, looking at tube components wondering where to start? Any help would be greatly appreciated.

Thanks again and Merry Christmas!