One of the most common areas of business failure is lack of skills of the owner. This applies both to online and offline business models.
The time you spend preparing for your new business is the most important time. You should ensure you have all the skills necessary. It will pay in the long run. This does not mean you have to sign for courses and spend your valuable time learning new skills. It means to delegate if you have in-house staff or as it is the case in most situations: Outsource the skills you need!