Calabre
is a powerful and easy to use e-book manager. Users say it’s outstanding and a must-have. It’ll allow you to do nearly everything and it takes things a step beyond normal e-book software.
You can get it from it's web site:
https://calibre-ebook.com/download_linux
Use the first terminal command it says to use to download and install.
If the first command gives problems.
Read the info about why you may want to use the second command they give.
Very important:
You will need to have the Puppy version devx.sfs loaded to provide needed files and programs for compiling.
It will not make a menu entry for calibre.
You can run it from terminal by typing calibre and pressing enter.
Can go to opt/calibre
Drag and drop the calibre file onto the desktop, to make a desktop icon, to click on, to run it.