All you need to do is go to Forums and click Help Forum under Mibba.com and there's a link to the BBcode tutorial. Kinda confusing at first but you get the hang of it, lol.
You can add friends by going to My Mibba.
Just click on Friends and you can add whoever you want.
You can also change the size/font or whatever by using the BBcode tutorial.
Do you know how to find that or do you need a link?