Answer:
well it depended on who but most of the time it was either trade or the not so nice way by taking it with force.
It is a book written and known is loosely translated as an "instruction learning" for Jewish people. It contains the religion's history, philosophies, customs, traditions, and ethics. These things are a direct link to a Jewish person's daily application of learning from the book.
Primary sources told an account of what actually happened because they were recorded from the actual event itself/saw the actual event
secondary sources (like our textbooks) arent 100% accurate because they are based off of the primary sources