You have

1. Have a validated business idea.
2. A product/service to sell.
3. A solid business plan.

What next?

You want to start your business and build a trustworthy rock solid online presence. GREAT!

Here are the further steps:

1. Choose a business name
2. Fund your business
3. Decide on your business structure
4. Take care of the legal tasks
5. Build your website
6. Define your product management strategy
7. Create a marketing plan
8. Launch your online startup