This site uses Browsealoud which is a piece of accessibility software for people with dyslexia, low literacy, English as a second language, and those with mild visual impairments.
If you click the orange button on the top right-hand corner of the screen, a toolbar expands.
You can then hover over each of the symbols to get an idea of what each one does. The question mark icon is the help button which describes in more detail what each feature does.
You can also translate the words on this website into your language. Click the world icon to do this and choose your language from the list.
You can also view the video below for a full user guide: