Good post on the Tutor2u blog regarding learning about your Economists. It is not essential for the exams but provides a useful foundation to understanding the assumptions behind the theories you learn. Also - click on there revision workshops, worth booking for yourself!
https://www.tutor2u.net/economics/blog/which-economists-do-a-level-students-need-to-know-about-some-year-12-summer-homework?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Wed%2019th%20July%202017&utm_content=Economics%20daily%20digest%20Wed%2019th%20July%202017+CID_86d008c8cea34acf79745bb2f980161c&utm_source=CampMonitor&utm_term=Which%20Economists%20do%20A%20Level%20students%20need%20to%20know%20about%20Which%20Economists%20do%20A%20Level%20students%20need%20to%20know%20about%20The%20specifications%20discuss%20the%20need%20for%20students%20to%20use%20the%20theories%20of%20significant%20economists%20but%20arent%20prescriptive%20about%20which