There is an webpage linked to the book
An Introduction to geographical information systems by Ian, Cornelius, Sarah & Carver, Steve from Pearson Education, that is used in some GIS courses at the department.
On the webpage you can, among other things, find multiple choice questions that are really good for understanding concepts and methods in GIS for many of the chapters. Try it! There is also a glossary and weblinks to other resources.
You can also download some data that are related to the book. Check it out: