To find SpringerLink e-books, click books or reference works on the Springer home page.
Doing so will allow you to browse all books or reference works available from Springer.
Uncheck include Preview Only content to limit your search to ebooks that are available to read. You can also narrow down the results further here, refining your search by content type, discipline, subdiscipline, publicaton, and language.
After locating an ebook, clicking the title will take you to the ebook's record where you can click Download Book for a pdf version of the title.