Some businesses are highly complex whereas other businesses have a simple business model and very few employees. If you see your doctor for a personal health check they will start off with some standard tests and progress to more detailed tests if required. It is the same with businesses, there are significant similarities between most businesses so much so that standard health checks can be performed on almost any business. It is possible to run a business health check based on benchmarks from similar businesses. This however does not tell the business owner or manager if the business is going in the direction that they would like to pursue.
You will find that there are dozens of different tutorials available online, ranging from books and courses that you can pay for to tutorials and video lessons that can be downloaded for free. Each of these courses is broken down into sections that will address each of the different sections of formula so that you can learn them in groups. This tends to make it much easier to fully grasp the necessary formula for each section before moving on to the next segment.