The site has two main accessibility aids.
Firstly there is a speech synthesiser available on much of the site. Click the mouse at the start of the text to be read and drag the mouse over the text. When the mouse button is released.the 'GSpeech' icon should be presented. Click on the speaker icon to hear the text read.
Secondly it is possible to change the language of the site, using the pull-down selector at the foot of the screen.