Thanks Tom. The app shouldn't crash when clicking on Homebrew 101, it will try and open a pdf though,do you have a PDF reader installed.
It may also be crashing if you have disallowed access to write to your SD card.
Got Adobe installed. The option to view full pdf opens your web page with the full pdf at the bottom but doesn't actuall open the file itself. I've not refused any permissions, just did a standard installation. Hope that's a help.