You will have access to every book in the library in any language.
Every book comes with a glossary section that gives a definition of the form of the word used in the book.
Each book (with few exceptions) has an audio book that can be played while you read along.
Though the ebook library is perfect for language students and teachers at school, if you are learning on your own you can still get your own account.
Books are regularly developed and will be added to the library as soon as they become available.
If there is a particular title that you are looking for, just type it into the search bar on the library landing page. If you are browsing for a book to read, you can filter both by language and by level.