You can find most of the library's e-books in Andor. If you want to you can seach in the e-book services own interface. There you can do more specific searches in the full text of ebooks. You can also browse the collections.
E-books can be read online or you can download them to your own device.
If we don't have a particular book, you can request it as an interlibrary loan from other Finnish libraries. Please note that there is a fee for this service.