Read the Rules Mate. It explains everything here. Avatars are the pictures in the corner. You can change this by going to edit your profile and copy and paste the URL to a picture and paste it in the avatar box in the edit profile page. Or go to the default avatars and if you see one you like copy and paste it in the avatar box. Clans since I assume you are a Predator the clans are Balatu and Hunter's Moon. But when you request to join BE PATIENT!! If you want to be in the clan post in the clan topic and just say May I join the clan. One of the leaders will say we will watch you to make sure are active. This means you must visit the site regularly post good topics that are not ridiculous and post in other topics as well. Standard procedure usually. if you need any more help look at the forum rules these topics are banned just for future reference so just be sure to not make topics such as these.