Learning plays a very important role in the evolution of human knowledge; in teaching area, teachers notice more and more that the learning level is getting down, on the other hand learners are unable to use their knowledge in new situation in an effective way, they claim themselves did not have a good learning or they have misunderstood the course. However, to solve this matter, we believe that the teachers have to transfer their knowledge to the learners in an easy way, which will help the learners to use them in an effective way? In this document we will propose three levels of knowledge structuring that result: the learning strategies to facilitate comprehension and evaluation strategies to make sure of the result outcome. Those levels of structuring and those strategies can be used in digital and classical systems of training.