There are hundreds of lists, each dealing with a differnet topic or interest. The people participating in the LIST often come from all over the world, but most of the discussions are conducted in English. The list above gives the name of the list, it's Internet address, and the topic of discussion. When I clicked on it, information about the list was displayed, including clear instructions on how to subscribe to it. Send the message.
Most Internet addresses are of the form hostcomputer.domain.domain.top-domain.
After you identify the LIST you want, you need to decide if you are willing to check your email everyday. Mail can build up in your mailbox, wasting disk space, if it is unread. Other lists generate only one message every few weeks, which is more manageable. If you decide to subscribe, look at the listname and find the address. You don't need a subject line.