Hi braulio and welcome to MR.
If you have any questions regarding the reader, check out the
subforum for the Sony. Lots of questions have been answered. If yours isn't among them or you can't find it, just ask. Plenty of helpful folks around here.
Also check out the
eBook library from MR. Sooooo many free books, lovingly formatted by MR members. That'll keep you reading for a while.
A lot of people don't like the software coming with the Sony. Here is a good alternative:
Calibre. Very easy to use and it allows you to organise your books exactly the way you want.
And don't forget to look into the
Lounge if you want some fun.