Okey, I can try to explain.
1. Almost at the top, you can see something that is written User CP. Click on that.
2. If you go longer down, and to the left, you will see "Edit Avatar". Click on that.
3. When you click on that, you will see some avatars and then you click on something you like. After that, you click Save Changes. Click on that.
4. You got yourself an avatar.
I hope I explained good enough.
1. Almost at the top, you can see something that is written User CP. Click on that.
2. If you go longer down, and to the left, you will see "Edit Avatar". Click on that.
3. When you click on that, you will see some avatars and then you click on something you like. After that, you click Save Changes. Click on that.
4. You got yourself an avatar.
I hope I explained good enough.