As to the methods, though in essence the same, there are minor differences in detail so that people of different dispositions may follow. Hinduism understands that there are as many dispositions as are Human Beings, they have tried to suit the groups these texts to suit the groups which have common dispositions. Each Veda has four parts. Samhitas are hymns addressed to Gods. The Samhitas and the Brahmanas form the Karma-Kanda segment of the Vedas. They are concerned with the ceremonial rites and rituals. Aranyakas are concerned more with knowledge ,Gnana and this is mainly for the semi retired from day to day activities. These are the basics of Gotra, Shaka and Sutra link. If one finds it difficult,one may trace them if they have any of the three, that is Gotra, Shaka, Sutra.
Russia was called Sthree Varsha, ruled by women. Krishna's son Pradhyumna's city was in Por Baijn, Siberia. Narada's Mountain Narodnaya is Narada's Mountain in the Urals. Arkaim was Rig Vedic Mandala City. Please read m Posts on each of these, filed under Hinduism. There is more! There is The Book of Veles considered to be the Russian Vedas.
After gradual research; I have come to the conclusion that long before all heavenly books, God had revealed to the Hindus, through the Rishis of yore, of whom Brahma was the Chief, His four books of knowledge, the Rig Veda, the Yajur Veda, the Sama Veda and the Atharva Veda."
Another important connection is Upanayana ceremony which is the primary duty of a Hindu. Zoroastrians have a similar Ceremony 'Navjote'
The Pancha Brahama Upanishad belongs to the Krishna Yajur Veda. Pancha Brahma Upanishad deals with the Five Aspects of Lord Shiva. The Five Faces of Shiva. Sadyojāta Vāmadeva Aghora Tatpurusha Īshāna