An Introduction: The purpose of writing the book is to provide a brief idea and knowledge about the various Vedic religious, rituals, practices,science, mathematics, beliefs prevalent in Hinduism. In short, to reveal the secrets of Hinduism. In India one should know that there were the intellectuals like rishis and saints and also tribals. The rishis and seers gave the written form of Vedas, Vedangas, languages, sciences, and all forms of knowledge. Sages and seers developed all faculties for Human knowledge, right from medicine to maths, philosophy, physics, astronomy and so on. The concept of re incarnation was one of the highest secrets of Hinduism and followed subsequently by other eastern religions.Though all were in pure Sanskrit it formed the base for the entire world to accelerate their development in all spheres of life. These were all introduced by seers in India through spirituality obtained from incessant meditation. The core practice is meditation. Since tribals living in India were accepted into the Hindu fold their practice still continues though reforms by Shankaracharya had its impact. These tribal practices were commonly criticized as a practice of Hinduism by westerners and other foreigners which is not true. Hinduism allowed their system also to flourish without much intervention. This book shall serve as an eye opener to all especially the younger generation who in the midst of their busy work may not have sufficient time to go deep into the Vedas and realize them. In whatever permissible context I have quoted the relevant portions of the Vedas and other texts to substantiate the authority of the writing. This book has also been written keeping in mind the innumerable NRI families and other foreigners belonging to various religions and cultures, across the globe, who would like to know about Hinduism and its secrets , and who at the same time have not been much exposed to its vast culture. Attempt has been made to analyse every topic to its semantics and explain to the reader for his understanding. Though India is divided by its language it is united by its culture which is Hinduism. However it must be noted that all Indian languages have their base in Sanskrit.The culture of religion was introduced by those ancient seers through epics, puranas emanating from the Vedas. Thus this culture is being experienced by the people in India called as Hindus. Hinduism has been a very tolerant society and over a period of civilizations has assimilated and welcomed many diverse cultures. Hinduism is not a religion in the strict modern sense, but is a composite culture. People living on the other side of river Sindhu were called as Hindus by the Persians (modern Iran) as they shared a common border with the ancient India (now in the region of West Pakistan). In the ancient Persian language they did not have phonetics or syllable for “sa or saa”, hence instead of being called as Sindhus they called as Hindus. “The swastika the early symbol of Hinduism has been widely found in Neolithic European ruins during the past two centuries of archaeological excavations. This has convinced scholars during Past and present that prehistoric Europeans practiced an early form of Hinduism with high spiritual concepts of eternal soul, transmigration, karma, yoga, the third eye and the Nirvana” says Richard Cassaro, Journalist and speaker. Most of us living in the modern age, especially the younger generation , would not have a holistic idea of the practices, science and technology prevalent in this culture especially from vedic times, and therefore this book is an attempt to impart and reveal in a nutshell of the wide beneficial practices prevalent in this ancient culture for the welfare of Humanity.