Folding isn't simple but there are plenty of people here and other places willing to help. I only even discovered the TH in mid June and have built a few very sweet sounding boxes, they really blow peoples minds! I started by using my Hornresp numbers and drawing it in 2D in
Sketchup it's very easy to grasp compared to ACAD. Hornresp uses metric unit, so if you go to the "Window" tab in Sketchup and select "Model Info", then choose "Units" in the menu on the left, select "Decimal" in the "Format" drop-box then you have your choice of Inches, Feet, Millimeters, Centimeters, & Meters (Hornresp uses centimeters) . Use the dimensions you have to do a rough 2D drawing
[IMGDEAD]http://home.comcast.net/%7E97gts/4015.png[/IMGDEAD]
I usually print out a couple and cut them out and play around until I get something that looks alright and go back to SketchUp and draw it. Then you can get your dimensions by using the Dimension tool and put them into
Cut List a very cool/helpful program
You can also read and use Brian Steele's
Spreadsheet for Folded Horn Layouts If you like the fold style it uses. There is also great information about measuring the fold corners there
Hope that helps