1. Enter your profile page.
you can find your profile by clicking your name in the top bar, a drop down menu will appear where you can select My profile.



2. The profile drop down menu
When you arrive at your profile page you should see a little gear icon.
Click this icon and a drop down menu will appear.



3. The avatar change
When you click Change avatar a new window should pop up.
In this window you have to click the Browse button, when the file browser opens you have to find your avatar file.
When you found your avatar file you press the Open button in the file browser and press the Submit button at the forum.

If everything went right you should now have a new avatar!
Please post criticism and suggestions below, thank you for reading! :)