Tim Besley is a person who studies economics, which is a fancy way of saying he studies how money works. He tries to understand how we use money to buy things we need, like food and clothes, how businesses make money, and how governments can help or hurt the economy.
Tim Besley's job is like being a detective, but instead of looking for clues to solve a mystery, he looks for patterns in how people spend and save money. He also looks at how government policies, like taxes and regulations, can affect how much money people have and how many jobs there are.
Overall, Tim Besley is a smart person who helps us understand how the economy works, and how we can make it better to help everyone have a good life.