Presently, telecommunications are key for several human activities. However, there are some places where their use is not possible because of the absence of the required infrastructure: antennas, routers and switches. The Mobile Ad-Hoc Networks [MANET] has become a key tool for wireless networks because of its two major advantages: they do not depending on infrastructure and offers complete mobility. This paper aims to show their development; introduce their basic concepts, features, advantages, challenges and operation modes; and present how it can be useful, emphasizing in day to day activities, as education.