Thanks for the answers! I've been reading in wiki pages (so many new terms to familiarize myself with...)
I've been out of the country on a short holidaytrip and before I left I just dumped whatever ebooks I had collected already on my Bebook .... mostly lit and pdf files.
It was awsome to have such a light shoulderbag on the plane and still have plenty to read
I have also noticed that the .pdf isn't the best format for my Bebook, Tinwolf and I'll try Calibre to see if I can convert them to a better format as wallcraft suggested.
I do have one more question: I know you can use an SD card for extra space... I had a look in the stores and they have SD High Capacity cards there which come with a warning that they aren't suitable for all devices: some apparently only are able to deal with a 'traditional' SD card.
Does it make a difference for the Bebook? I must admit I have no idea what the difference would be between an High Capacity card and a traditional card....