The importance of the agricultural revolution was the creation of surplus production, which led to specialization and trade. People were able to specialize in what they did well, produce more than they needed and trade the surplus to obtain the other goods and services they needed.
Individual abilities differ so specialization allows people to produce what they are best at.
In economics this is explained by the theory of comparative advantage. A person who concentrates on one activity tends to get very good at it over time. This is typically referred to as learning by doing . Specialization only works if there is trade. Early trade took place as mutually agreed upon exchanges between neighbors and over time moved to local markets.