Below is the official leaflet that is being delivered to people as we speak:
To summarise: Email email@example.com with the subject matter 'JOIN FAN CLUB' and we will then send through details when they are finalised. We think at the moment that it will be a one-off payment per year of around 5 - 8 pounds in order to cover the costs of printing and posting the materials through.
Still unsure if this is for you? Why not give it a go for a few months, and if you decide its a waste of time you will receive a partial refund (basically the fee paid minus the cost of whatever printing and posting charges you have incurred since you joined.)