I first became aware of the Golden Age of comics when I was a kid in the 1960s via the occasional reprint in some of the DC Giants and Marvel's Fantasy Masterpieces' reprints of the 1940s Captain America, Sub-Mariner, Human Torch and others. The concept that all my favorite superheroes had histories behind them that were decades old fascinated me.
I also began learning of the old pulps via the paperback reprints of Burroughs, Howard, Doc Savage and others. These same reprints also exposed to such wonderful illustrators as Frazetta, Krenkel and Bama. Exposure to OTR via LP collections and Golden Age cinema via television broadened my interest in vintage popular culture.
By the 1970s I had discovered fanzines such as The Rockets Blast Comic Collector and The Comic Reader and read whatever books on the history of comics I could acquire (Steranko's History of Comics and All in Color For a Dime are couple that really stand out in my mind from this period). Both DC and Marvel continued to reprint Golden Age material and by mid mid decade I had begun purchasing the occasional Golden Age back issue.
By the end of the 1970s I was attending the Joe Kubert School where I continued to learn more about Golden Age comics, illustrators, cinema, radio, etc...from both my teachers, fellow students and any book, magazine or broadcast I could find on the subjects.
Since then my interest in Golden Age popular culture and the history behind it has only grown. I continue to watch, read and research all the time. Now-a-days there is such a plethora of books, DVDS, and magazines that it is hard to keep up with them all.
This last decade, as I got into the computer age, I've also found wonderful folks via forums, groups, blogs and sites such as this where we can share our interests and information.
This is truly a Golden Age for those of us who love the Golden Age!
Joe M