Advice for starting a business?

So basically, I’m nearly 20 years old, and I’m studying biomedical sciences. My goal is to finish with this degree and then go postgraduate medicine to become a doctor. I have a passion for dermatology related topics such as skin cancer, acne, eczema etc.

What I thought was creating a website in which people can come and get informed about various skin related conditions and how to treat them, and the goal is to gather as much reliable and accurate information as possible for ALL conditions. Even little subcategories. In addition to that, I’d love advising people, providing some help online, but before doing that I’d like to go though some wide research and join dermatology related courses, get some diplomas, in order to be capable of giving the best advice.

I’d like your thoughts on this? How could I start? Do you think it can be successful?