There are few steps to start a website:

1. Buy a domain name and hosting.
(domain name is like www. ___.com)
(hosting is where the website located)
2. Plan your website.
3. Design it by uploading your content.
4. Do SEO so people easy to find you

This guy helps me a lot in doing my company website.
You guys can check it out:
https://www.fiverr.com/ben_low/build-a-resp...rdpress-website