This video is a dummy down explanation by the developers of the Drag n Drop plugin. I decided to use their video so you can hear from the horses mouth. This introduction to the plugin is very important because it gives you the basic idea of the plugin that you will be using for the design of the HQ websites without touching a line of code. In the videos below, you will see how to import already done layouts and demo content without doing much but knowing how to use the backend of the plugin is crucial, so please pay attention to this video.
Below is a link to more video tutorials incase you want to learn some aspects of the plugin.