This review article is a compilation of the main learning style models found in the literature. These models are, first, chronologically ordered to observe the development of the field over a period of time; in the second part they are classified by categories that group them together to finally establish the main relationships between the different models. This work has been done with the purpose to build an updated theoretical and analytical approach to the subject of learning styles. It is concluded that the extension and depth of the learning phenomenon in general and the learning styles in particular, print complex nuances in the comprehension process related to it, because the set of relationships between the involved variables are upredictable and unknown for now.