See this page for:

Help With Hearing Websites

Currently there is no Linux specific information for Deaf and hard of hearing web users; below are links to general information in the Windows section

Avatars - digital signers
Explains how digitally created people known as 'avatars' are bringing sign language to the web.

Subtitling and transcripts
Gives an overview of the alternatives to audio content on the web.

Content available in New Zealand Sign Language (NZSL)
An overview of NZSL on the web. (Windows Section)

More information and useful links
UK and International Deaf and hard of hearing web links. (Windows Section)

If you are looking for help on making your computer talk to you, see:

Making your computer talk
This section tells you about the different ways you can make your computer talk in Linux desktops.