You have to look for different tutorials on YouTube or on Google. Application lacks a tutorial, so it is hard to figure out how to use everything.

Usabilityis a bit difficult to use at first. Only thing user really has to do is go to the menu and select option they want to do. It’s so easy to get started with Calibre that it’s actually pretty difficult to use it wrong. All operations are done through interface, without need to use additional options. You can use it with your mouse or with keyboard only. You will need just a few minutes to get used to it. It’s so easy to use, even if you are using it for first time. Usability of install Calibre is very good. Connect to a folder button lets you add e-books from your computer by browsing for them. With Calibre, you can add your e-books by using the Connect to a network drive button. It is designed to be user-friendly and intuitive. It has a side panel with a library of different items, a sidebar with a list of all books, a toolbar with different editing tools, main window with content of book. Application features a lot of menus and buttons. Windows 10is quite customizable bit complicated to use at first. “Add books” and “Convert books” icons are on the left side, “Editor” is on right side. Toolbar on top has three icons: “Add books”, “Editor” and “Convert books”.

It has a sleek and minimalistic design, with a toolbar on top and three icons on bottom. It has a modern design with intuitive navigation. Interface of Calibre 64 Bit is very user-friendly.

Software Calibre Linux has a graphical user interface that provides a way to manage a library of e-books and a tool to convert e-books from one file format to another. Calibre is a free and open-source e-book computer software application that runs on both Microsoft Windows and Linux operating systems.

Calibre android reader 2015