First of all, you have to define the purpose of rapid-learning content, what do you want to accomplish? What are the goals? This is the foundation the interactive content and feedback should relate to. Secondly, UX Design (user experience design) in the form of user-friendliness, how the learning experience should open up to the user, how to inspire and to motivate the learner to go forward. In other words, it should be a human-centred engaging experience. Where, thirdly, it at the same time as simplicity is guiding the layout, it should also challenge the creative ability and analytical skills. And in addition, finally, trial and error, the design should favour mistakes and errors by including exclusive feedback for improvement. In order to make the user rethink, refine and remake again and again.