The Family Center on Technology and Disability (FCTD) does a great job getting information about assistive technology to the masses. Not only do they get information out there, but they get GOOD information out there in a way that's very easy to understand. With their latest offering, Assistive Technology Solutions Fact Sheet, they continue that winning streak.
The Assistive Technology Solutions Fact Sheet is a great resource for anyone who is very new to the world of assistive technology. It gives examples of various types of AT and of different levels (low, mid, and high tech). You can find it by clicking this link: http://www.fctd.info/assets/assets/19/AT_solutions-2011-FCTD.pdf?1322842743
The site (http://www.fctd.info/) also has other information that you may find useful in learning about or navigating the assistive technology landscape.