Welcome to MobileRead, othoorens
I have the Blue Sony 505 and love it! I am still playing with it and will venture on to calibre next for my collection (you can start reading the threads about it before you get your reader).
Sony offered 100 classics for the reader but after I started downloading them from Sony--I found that the classics uploaded by members at mobileread were formatted MUCH better (for me anyway). You can start downloading books now to be ready for when your reader arrives.
This is the index
http://https://www.mobileread.com/for...hp?forumid=126 for books done by mobileread members.
The Sony reader uses LRF format.
I also can use epub and I know that there is another format or so---- maybe someone will chime in with the answer or you will find out in some of the threads.
Have fun and I hope you love your reader as much as I love mine
