Port already in use, what to do?

Thanks for the quick reply,

I am not sure though if I am capable of doing all of that, I am really a beginner with Linux and the stuff there seems quite tricky, especially since it has to be configured with other webservices as well (Or so it seems according to the last part of the guide, suggesting to add other services to the proxy as well.)

Anyways, will see if I can manage.