Many resources related to Geographic Information Systems (GISs) we can get from the Internet. This is another one:
Not only GISs discussed in this site but about Science also. It provides news, resources, commentary, and interviews on the use of GIS technology by the scientific community and for scientific applications. Here we can download books for free. Many papers and journals regarding GISs and their applications in many areas such as disaster management are available.
Hopefully this site will give us benefit..