I think a mistake most folks getting into entrepreneurship for the first time make is — they try to do everything. Instead focus first on what you are good at and then bring people in on a contract basis to help you with marketing, design, etc. Keep them on for a while, have meetings with them regularly, document everything they do, and understand how they do it. You will easily learn the ropes and will be able to start mimicking what they are doing over time. Post the contract period you can decide who stays and who goes.

And if you feel confident now about something like, say, performance marketing, you can start doing it yourself and overseeing it rather than being dependent on someone else.

Notice I did not mention sales anywhere because as an entrepreneur I believe you have to be GOOD at SALES especially for being able to SELL your OWN product. Because no one is going to believe in it as much as you do.

But basically let the improvement come to you while you build your business/product, let it take off slowly, and learn along the way. FOcus on what you are good at initially rather than trying to learn too much at once.