Last year, I did a project that used AlivePDF. I found that there wasn't as much tutorial content on the Web as I would have liked. For folks that are new(er) to AS3 - it is lacking enough in Flash tutorials to make it "kinda out of reach" without struggling. Even for myself, I wished there were more simple, but extensive, examples to cull from.
Like you, I kept getting search hits showing me a small handful of Flex apps that used it, but I was able to sift through a few things, including the website that provides the API for us. So this is most likely not going to get you what you want - it was a little bit of a slow start for me, and I just had to "grow" from the small examples I found on the main website, and look at the API documentation...and then put in the time to try my own simple tests.So, I can really only suggest that you start small, understand the basics of AlivePDF, and work from what you have success with.
You've probably been here, but most of what I learned came from the various pages of th main AlivePDF website:
http://alivepdf.bytearray.org/
The link to the API documentation:
http://alivepdf.bytearray.org/alivepdf-asdoc/
there's a Google Wiki, with other API notes:
http://code.google.com/p/alivepdf/wiki/APINotes