Technologies for obtaining information in the private intelligence sector are considered. This is a unique work that has no analogues in the world, which comprehensively illuminates the entire process - searching for a source of information, legends, compiling a psychological portrait, developing a first contact method, lie detection technology, manipulation technology in HUMINT, information manipulation, information fixation, software solutions for HUMINT. The training course is accompanied by a huge number of examples, both from practice and from ordinary life and popular films. The book is based on the author's more than twenty years of experience working for a private intelligence company.