Geocommunity provides articles and links to a great set of GIS information. Directions Magazine is an on-line source of information and solutions. Access to discussion groups, extensions and data sources are provided. Cartographic Links for Botanists has pointers to many excellent resources for mapmaking. Luckily, huge amounts of data are available for downloading via the Internet.
Many sites sell data, but many others provide it without charge.
The following links provide some examples of data sources, with an emphasis on data for northwestern Wyoming. Several of the links also provide extensions, scripts and solutions to problems. National Geospatial Data Clearinghouse gives you the ability to search for regional and local spatial data from one spot. The Center For Advanced Spatial Studies at the University of Arkansas maintains an excellent list of geospatial and attribute data sources. This is a great spot to start looking for data.