The discussion system, Lyris, is really easy to use.
To read the majority of the messages you just need to follow the "Discussions" link that is at the top of the page.
If you want to post messages rather than just read then you will have to join CML as a member, this is free although your support is most appreciated if you decide to contribute.
To join you need follow the "Join Discussion Lists" link via the Discussions link at the top of the page.You will get an email asking for confirmation that you want to join reply to the email confirming that you want to join.
If you don't reply to this email you will not be able to post to or read any of the discussion lists.
Once you have joined you can access your account by clicking on the Members Discussion Lists button on the main web-site and selecting Access Discussion Lists.
You will then be presented with a list of the discussion groups available, you need to log in to access these you can do that by either clicking on the log in link at the top right or clicking on any of the discussion groups.
Once you are logged in you will see a link to My Account, clicking on this will give you access to the admin system and you can change any of the options of the lists.
You can change these list by list or globally. To change globally slect the Advanced tab and then select this list only or all lists.
They can be set to send every message as contributed, a daily digest or no mail messages and use the web interface only.