This is the first book in the series and is the most important. The foundation is based on the principles of basic astrology propounded by various schools of thought. The book covers signs, their impact, the planetary impact in each sign, the role of depositors, details on each planet and their relationship when in aspect and in the divisional charts as also the complexities they can pose. This book attempts at conveying that the basic importance has to be given to the planets, their placement and various relationship as a result of the same. The yogas, dasha, nakshatras etc. will be dealt in the other books that follow, but all have to be applied keeping in mind the first basic principles that are being enumerated in this book.