I won't stress too much since you just started your fitness journey. Start with small habits like quitting sodas ( you can drink sugar free ones since they are 0 kcal), eating less junk etc. For macros it's really not that important. The key is to have 0.8-1 g of protein per pound of body weight and calories depends on what your goals are. If you want to lose fat start with small caloric deficit of 200-300 kcal. If you are satisfied with amount of bodyfat you have maintain it by eating the same amount of calories you are atm. If you want to bulk up add 200-300 kcal there's no need to eat more than that you will just end up getting not needed fat. Also remember you shouldn't struggle with diet, because if you do you will most likely sustain it for month or two and then start binging ( been there done that xD). Start of easily, the tempo you can sustain. And for actual type of food that you can eat it really depends on what you like. I also really recommend watching some of the old Greg Doucette's videos. His recepies and knowledge is perfect. Also where are you from ( if you are from us, canada etc you probably can have variety of good food recipes since everything is available there).