Great startups begin with the germ of a great idea, but as you run with that there are many things you need to know in order to give yourself the best chance to succeed.
Learn more about some of the fundamental aspects of creating a company that can grow and thrive, and change your life as well as the lives of your partners, employees, and customers. 
Creating and maintaining effective partner relationships 
If you choose to create your business as a partnership you will benefit from the additional experience, creativity, connections, and determination. However, the partnership relationship is often a tricky one to navigate, and it’s crucial that you go into the arrangement with a solid strategy on how to best benefit from each other’s contributions while limiting the risks that come from co-ownership.
Source: https://www.entrepreneurshipsecret.com/starting-your-new-company/