On the home page of the forum, click on 'register' (just under the forum name).
You will see 'Registration Agreement Terms' and at the bottom of that window, you have to click on 'I Agree to these terms'.
You then have a form to fill in. The best thing is if you type in your first and surname where it says 'username', this way everyone knows who you are when you log on.
Then you put in the email address you wish any forum correspondence to go to and your password.
Localisation means where you live. That and the rest of the questions in that section of the form are for you to answer or not, as you wish.
For the final section; 'preferences' you can chose what information you want people to see.
Click to allow BBcode and not to allow HTML.
When you've done all that, click on 'submit' at the bottom of the page.
You should then receive an acknowledgement email at the email address you gave in the registration questionnaire. If you don't get one, don't worry, I will check regularly and do it manually, where necessary.
After that, when you want to post anything on the site, you have to log in first ( top right-hand corner) and then away you go.