Manual:
http://www.pocketbookreader.com/uplo...0_english_.pdf
Sample books in English:
http://www.pocketbookreader.com/uplo...in_English.rar
FBReader180:
https://www.mobileread.com/forums/showthread.php?t=65865
Themes:
https://www.mobileread.com/forums/showthread.php?t=80518
(Take a look at FIVE and CLEANLOOK)
Controlling default reader apps:
https://www.mobileread.com/forums/showthread.php?t=67149
English dictionaries:
http://bookfast.org/pocketbook/dicti...ers-dictionary
http://www.pocketbookreader.com/uplo...ctionaries.rar
That should get you going.
If you like Science Fiction/Fantasy, you might want to stop by:
http://www.baen.com/library/
...and:
http://baencd.thefifthimperium.com/
(Click on CD listing to get the catalog of goodies. And yes, these are legally free. Baen likes the promotion value and figure they'll get you to go to their Webscriptions bookstore. No geo-restrictions, no drm, good prices, great books.)
Have fun!