I have just transferred my E books that I used in Apple OS so they are in epub format. What programme will open these? I am unable to find a free one. And definitely not in the repository? I'm still learning
You may give calibre a try. It's a free, open-source and cross-platform ebook manager/converter/reader, which supports .epub among other popular formats.
BTW, if you're unable to find calibre in your AppCenter or add its repository to your system, this probably means you have to execute
sudo apt install software-properties-common command, which will allow to install apps from other (non-system) repositories.
To enable flatpaks on Elementary, follow the elementary OS Quick Setup:
sudo apt install software-properties-common --no-install-recommends sudo add-apt-repository ppa:alexlarsson/flatpak sudo apt update sudo apt install flatpak
Next add the flathub repository:
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Last, install foliate (this can be done as a regular user):
flatpak install foliate
Note: this is not the recommended way of installing software on Elementary, but it is the way of the future, and will hopefully be fully supported in 5.1.
Finding a really good epub reader is a problem. I have loads of epub documents and I read them on 3 different platforms (Elementary/U18, SailfishOS & ReMarkable) and all three have apps which render the epub docs differently. If it is just text then all is fine, but throw in diagrams, illustrations, different chapter styles etc and things go awry.
Currently on Elementary, I have installed Bookworm and FBReader; FBReader is the epub app for SailfishOS as well. I have, at times, had Calibre installed but it is so big and, in my opinion, ungainly, that I have removed it.
I like Bookworm the most - it is the most elegant solution so far - but it is not the best for rendering. As I'm currently proofing a book for one of the better tech publishers, I make sure that if I read it in Bookworm, I also check it out either in pdf form or on a different device!