To add Blog entrys just drop a .txt file into the content_blog folder. The File must have the following format:
title: your title here
date: 01.06.2012
content:
content here <b>with html styles</b><br>
please be sure to make the line break after content:
To create a category just drop a folder in the content_portfolio folder and put your images there. It will create a menulink for each of the category folders.