I think this is not general knowledge and I haven't seen it around here, therefore this short tip:
It is perfectly possible to download our ePub files from MobileRead directly, without any other software being used.
here's a short How To (thanks to Hadrien from Feedbooks):
Open your Stanza->online catalogue
touch the + sign on the right hand side
add a website
www.mobileread.mobi
go to the site -> browse E-Books,
click on a book, read the comment, click on the ePub file and it downloads right to your Stanza folder
As the cover is lost that way (don't ask me why), you have to do a small edit:
Click on the book, go to cover and get the cover from the book contents. Save the cover.
Voilą. You're good to go
It could be easier, but it IS faster than downloading the book to your PC and import to Calibre or open with Stanza.