This text is a brief version of book "Rules of brain. That needs to be known about a brain to you and your children".John Медина is the known molecular biologist, engaging in the study of genes that participate in development of brain, and genetics of psychonosemas. Д. Медина is a professor of bioengineering of the Washingtonian university, leader of Center of researches of brain at the Pacific university of Seattle. Simultaneously with active scientific by activity of Д. Медина during many years is the consultant of different biological and pharmaceutical companies, engages in literary work - he is an author 6 popular scientific books on biology.Interest in a brain as arose up the object of study for him not by chance. Being not only a scientist but also father of two children, taking up his study, he tried to answer, foremost, on questions that arose up in his process watching own children from the moment of their birth. The wide field for research of this theme was given by his clinical practice.Conception describing 12 "rules of brain" became the result of long-term researches, that found a reflection in this book. Telling about these rules, doctor Медина exposes the features of different departments of brain, their co-operations, gives advices and recommendations, as, using them, it is possible to become more effective and more successful. At the end of every head there is a division of "Idea", where an author describes, as that or another rule can be useful in practice. In our review we briefly will tell about each of 12-ти rules.We remind that this text is a summary of book