Welcome to the forum solotc, and congrats on the reader. Be sure and check out all the free books here at mobileread
https://www.mobileread.com/forums/forumdisplay.php?f=126 that are ready to go for your Sony. You can also look a few forums down from that one and get many ePub books that will also work.....
Again, congrats and have fun!
__________________