I have the app GoodReader and it seems to be my default app to open downloads etc. But it does not open epub files! How do I make Ibooks the default reader? Thanks
Hmmm, even if you got rid of GoodReader on the iPad I don't think iBooks would automatically open PDFs. It's not an Apple like move to allow file manipulation on iPad without the aid of iTunes. You can try it by deleting GoodReader, try the experiment and reinstall it with iTunes when you sinc.