CA course is very vast so coaching is recommended.You can join coaching like Bhanwar Borana, CA Club Institute etc. You will be taught the basics of all subjects and cleared doubts. Focus on clearing one group at a time. You’ll have to complete 3 yrs of articleship under a CA firm

Go for an internship for sure. It will give you practical knowledge and experience that will make you stand out when applying for jobs after college. And you can manage both academics and an internship if you plan your time well.

Dude Krebs cycle easy. just memorize it like a song. Once you get the pattern down pat you’ll ace it no problem. Btw make sure you hit the gym after exam, biochem stresses you out