This is a helpful article, if you weren't aware of such facts as that brown sugar is acidic (and so can help baking soda to make things rise):
Cookie Science: The Real Differences Between Brown and White Sugars, by Stella Parks:
https://www.seriouseats.com/2015/12/faq-difference-brown-white-granulated-sugar-baking-cookies.htmlsugarbeet_cooking_cookie_sugar_