FEUP's Library gives you access to books in print and digital format (ebooks). Printed books are located on the library's shelves (check out the subject organization in each library's floor). The access to ebooks is provided through many different subscribed collections, some of which are multidisciplinary and other are specialized in engineering areas.
This search widget allows you to make a quick search by keywords in title:
Ebooks' collections allow you to access thousands of titles on a 24x7 basis.
If you are outside of FEUP's campus, you just need to activate a VPN (Virtual Private Connection) to get access.
For some collections to accessing the books offine, you may need to install previously the Adobe Digital Editions, like for example (Ebrary and Academic Books Collection)