Do I have to use the computer or can I ask the library staff for finding a book?

The automatic catalogue is very easy to use and include a simplified model for searching and asking for help.  Apart from that, the library staff  would help you to find what you are looking for, if you need it.
In order to learn how to use catalogue's advanced and basic functions you can join  some of the sessions of a training course organized by the BULL. We also recommend you to watch the tutorial about the catalogue