Use Skype
 
If you do not have "Skype" in your computer, you will need to download it from www.skype.com. It is free, and free of viruses.
To talk to Mr Ozone you must log in as missozone1 (or 2 or 3 or 4)
or masterozone1 (or 2 or 3 or 4).
For all these names the password is student.

Then you will see Mr Ozone's name and can click it to chat,
or click the green phone to talk.

Mr Ozone will be online most days from 5 to 6pm to discuss O-level English

When you use skype with one of the above names you will be able to join the
chat with other students if you wish. Just type a message to Mr Ozone first.

If you are already online and logged in to Skype as above,then you can
simply click the button above, if it shows Mr Ozone is online.