To be sorted you need to click on 'Applications' then 'Sorting Hat'. Once you have done that you will see a howler at the top of the screen. Click on the howler and copy the text in the box. Then go back a page to all of the subjects. You need to post a new subject and paste in the text from the howler. You then fill it out. It helps if you have posted on one of the role play subjects first. Platform 9 3/4 is always a good place to start. If you dont know what to write, look at the other posts or the 'writers block' subject. They will both help you. You should act like it really is you and you have never met any of theese people before.
Anyway, once you have filled out the form, give it a subject title (such as you name, sorting hat) and post it. You then have to wait for the sorting hat to sort you properly. It helps the sorting hat to make its decision if you put alot of detail and a strong sense of charecter into you post/form. It may take some time for you to be sorted but hopefully not that long. Once you have been sorted you can post in you house common room or the grounds and, when term starts again, classes. Also, once you have been sorted into a house you can join the quidich team or become a prefect. You can also ask you head of house about anything, whether it is via an email or posted in the non-roleplay part of you house.