School for me is very recent, so I still have in mind all the reflexes to have and the methods to adopt to be efficient and progress quickly and calmly. What I offer you, students of all levels (from college to L1): - take a tour of your knowledge in the field -a personalized program to consolidate your strengths and remedy your weaknesses - lesson sessions in several pieces (lessons, exercises together then alone, questions and answers) - answers to your questions even outside of class, if for example finding the morphisms of the symmetrical group towards C prevents you from sleeping