Horace's erotica evolution:
Early teens:
What I could find around the house (Sears catalog, medical guides, sex scenes from novels, women's magazines. The real gem was "The Naked Ape" by Desmond Morris which had a chapter with very explicit descriptions of arousal and sex)
Took up photography as a hobby. Found that most photography books had a chapter on photographing nudes. Borrowed all the photography books from library.
Late teens to mid 20s:
Playboy, Penthouse, other magazines.
Books about sex, such as The Hite Report.
Mid 20s to mid 30s:
Some videos and DVDs. Liked how-to videos, such a "Nina Hartley's Guide to Oral Sex"
Lots of business travel. Found that one could rewire the movie boxes in hotel rooms to bypass the scrambling.
The dawn of the internet age. Downloading still photos. Found a strip club that was ahead of its time and streamed video and chat with the girls. They allowed free viewing for a few minutes, but their mistake was they put the timer on the client side (software developers know what I mean)
To present:
Great variety of internet videos. As a young man, I had a fantasy of an older woman explaining her body to me and teaching me about sex, so I still have a thing about videos of that nature. I like to see women undress. I like to watch women masturbate. I prefer hairy, natural looking women and prefer amateur porn.