The 4th semester of a research master's degree is dedicated to the realization of a research work which will be translated into a conception and writing of a thesis and finally the preparation of an oral presentation and a defense.The thesis is a very important step in the path of university studies, because without it, the student cannot acquire the quality of graduate.So, in this little book you can find a small guide on:- How to organize your dissertation.- How to present your defense. - How to write a research paper. - How to prepare a poster.