There is such a thing as a free lunch!

I- As a member of Geology 137, you are required to subscribe to several periodicals.  Luckily, they're all free!   
 
To receive a free subscription to GeoWorld, click here. To subscribe to ArcUser, click here. To receive a free subscription to ArcNews, click here, and then click on "subscribe." Click here to link to a form that will allow you to subscribe to several discipline-specific GIS newsletters.