What is the purpose of your site?
Before you think about design issues you really need to think about the purpose of your site. Once you have this clear it will make structuring and designing your site much more simple and will help us to build your site in a way which makes navigation obvious.
Who do you want to attract to your site?
This will help design your site, it will also help in choosing content. You need to think about what people will be typing into Google. Also, for example, if you want to attract young people to your site you should have a mobile version of your site as so many young people browse the internet on their phones.
Why is your idea worth listening to?
If you want to attract and keep customers you need to have some substance in your idea or plan that will keep them interested.