In 1466, Athanasius Nikitin set off for trading purposes from Tver down the Volga. Having reached Derbent and Baku along the Caspian Sea, he then sailed to Persia (modern Iran), where he lived for about a year. In the spring of 1469, he arrived in the city of Hormuz and reached the India along the Arabian Sea, where he lived for about three years, traveling a lot. On the way back, he reached Persian Trapezund (modern Trabzon) through Persia, crossed the Black Sea and in 1472 arrived at Kafu (modern Theodosius).
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.