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Scanned PDFs will of course look no different (perhaps a little bit more pixely even, just like non-retina apps). Normal PDFs should hopefully look amazing once Goodreader updates.
I agree it's much worse than the iPad 2 and it has rendered the app useless. I'm sure they will update soon.Goodreader is, for the moment, essentially useless on the new ipad. The display of PDF file is actually much worse than on the ipad 2 (presumably because subpixel antialiasing doesn't work anymore without proper retina support?).
It is scandalous that they still haven't updated the app for full retina support. For a long time everyone knows the new ipad will have retina screen, and they should have prepared a new version beforehand.
I don't know that anyone teaches a GoodReader class specifically, but here's a Google search that seems to have decent GoodReader tips and even videos to watch and learn. http://www.google.com/search?client=safari&rls=en&q=goodreader+tutorial&ie=UTF-8&oe=UTF-8New to online forums and I was born when unicorns roamed the earth...read not tech savvy. I am looking for an online tutorial on how to use goodreader and to learn it's complexities and to make the most out of it.
I live in the Bay area and would also be interested in taking a class.