How to find better pressings

I finally heard what all the LP enthusiasm was about - new cartridge in my old Thorens, got my Cary preamp fixed and wow, it was a whole new experience. I had just heard a live choral performance so it was easier to compare sound to real music. I was staggered by what I (finally!) was hearing in my home.

Now I realize that there are a special few albums that I really love, and would be willing to pay a premium for excellent recordings of these.

Thus, my question: how does one learn about pressings and releases about a specific pieice of music? I suspect there are no easy answers to this except to spend time at it, but any tips would be appreciated.