I’ve provided information in the previous lesson for my recommendations for hosting and domain names. If you have decided to go with Siteground then I will show you in this video how to install WordPress and get it setup ready to go.
NOTE - When pointing your domain, use the values that your account gives you, not the ones from the video as they will differ 😀
If you are using a different hosting provider, note that each host has slight differences in how they best like you to install WordPress, so check with them on how best to get started.
Otherwise here are the WP official instructions to get you started.