FINALLY I DID IT!!!
I did not have to read all the bullcrap everyone was posting. Moshu, you helped me somewhat with these lines:
you create a Page using the template and you link to that page... /?page_id=321
That helped me to understand the system better. But then I also needed to read this one line:
2. Click on the template drop down menu and select the php file from the selection available (About.php for your about page etc)
From the readme file.
I did not see this mentioned as simple and well in any of the site documents.
After that, I just needed to put some text in, I dont know where the text went, but it made the page possible to publish.
Also, the use of the word "template" confused me alot. Mostly because the themefile already contained templates. I thought I had to code my whole archive myself sorta. But luckily not.