I cannot say that I've really "gotten" into anything, since neither is a sexual fetish for me, but, yes, liking feet did come before liking tickling, and I did come to sites like this as a result of that. I figured that it would be on sites like this that I could get more of the reference material that I was looking for (I'm an artist, and photography can help aid an artist).
I sometimes ask myself: "could I have gotten this material without resorting to going to fetish websites at all?"
The answer is yes, but it most likely will not have produced the results and hits I would have needed to recieve. Aside from that, foot fetish photographers really know what they're doing since they're so focused and know the fundamentals of what pleases the eye.
Any material I will have recieved in the mainstream will have been rare, coincidental, and most likely unsatisfactory.
Also, had I not joined these websites, I will not have made the friends and aqquaintances that I have here, and that would have been a shame. ^^