Links from universities, for example, tend to change each semester. If you track the a source's home page, rather than its specific page, then you can drill down to find the latest information. The following links provide good samples for various areas. All of your links should be verified to see if they are still active. If you e-mail the contact person listed on a Web page, he or she may be able to inform you if the page moves or changes and may keep the page alive if people are still interested in using it.
Corporate contacts are often good sources of support information, handouts, samples, and so on.
Corporate contacts also will also be good sources for guest speakers. Getting the information you need as fast as you can is critical in planning your classes. The more people you have working with you, the better it is for you and your students.