If you don't have a commercial business, just put your home address.
If you have more than one website, list them here. You can also list any/all domains that you own.
List any other social media links that you currently have set up.
This is VERY IMPORTANT. This will guide the direction of your brand design.
These do not need to be direct competitors. They may simply represent brands that you would like to compete with (for example, if you want to sell shoes you might want to compete with Nike).