Really busy, but some quick points.
1. Dictionary works when you're in the reading view. Menu > Dictionary > You get a cursor, you move the cursor to the word you want > Press centre dpad > definition comes up.
2. Any typing is done through a virtual onscreen keyboard that needs to be navigated using the Dpad. It's actually relatively easy despite how it sounds, and you only have to use it a few times.
Will try and come back as time allows...