Library means collection of books and other documents
When one has a library in daily life, it usually has a public library (there are also national libraries, scientific libraries, music libraries, etc). A public library has different types of digital and physical information carriers (can be thought of like books, CDs, Dias, DVDs, magazines, etc.). This information is accessible to all inhabitants from the stage. The library is freely accessible to all, only if you want to take your books home, a membership will have to be taken.