Now that you know a little bit more about different kinds of disabilities, the various AT available to help users browse the Internet, and some useful tools for you as a developer. I would like you to try the following exercises as well. I hope that it will help you to further understand what it is like to browse the Internet in a restricted fashion and maybe then you can gain a deeper understanding of what it will be like for people with disabilities when they go online.
These exercises are a poor substitute for interacting directly with people with disabilities and talking to them about their experiences, but I hope you find them useful anyway.
I call the first exercise "No Frills" browsing.