What is the best way to install the e-book manager Calibre? The version in the Ubuntu repositories (available through Muon) is very much out of date. There is a PPA, but the latest Calibre (2.x) seems to require Qt5 libraries, so the maintainer warns against installing it on Ubuntu 14.04 Trusty. I am wondering whether it is safe to install it on Netrunner 14.1, since that has some updates from Utopic?
The latest version of Calibre is in this PPA

But there are two other PPAs of the same maintainer with older versions, which may be safer to install. I am a bit confused as to which one to use.
sudo add-apt-repository ppa:n-muench/calibre2

The calibre here seems to be broken anyway:
Just what new features are you expecting that current calibre doesnt have? I use calibre myself also in current version and so far have not found anything I would be missing :slight_smile:

It’s the first time I will use Calibre, so I don’t know what features and bug-fixes the newer versions bring. I just bought a Kindle Paperwhite and thought it might be better supported on the newer versions. Does the version in Muon (calibre 1.25.0) support the Paperwhite and allow online book purchases through Amazon?