Welcome to the club
There aren't really any decent tutorials out there. I actually started writing one a while ago but haven't had time to finish it. Other than that, you can read some of the "tutorials" available in their forum. Their English isn't the best, so it may take you a few readings to understand wtf they'r talking about half the time.
there is one basic tutorial in their forum enough to get u up and running. The rest will take some time, testing etc. I got my xrumer yesterday and so far running from my desktop. If anybody wanna share any tips or talk abt it lemme know.