This site works like a blog, and it can be hard to figure out where to start and build your first website. Here you have such a crossroads, how to proceed and what to do first.
1. Creating a Hosting (where site data is stored), choosing a domain, installing a WordPress content management system
2. Basic information that needs to be set right at the beginning (site name, description, permanent links, widgets, rubrics, labels)
3. Change your WordPress factory theme
4. Creation of additional functions of which there are millions directly in the administration of each WordPress site. Examples include a contact form, post editor, SEO settings for search engines, GDPR, traffic analysis, etc.
For any advice, question, clarification, do not hesitate to use online help creating a WordPress site where I will be happy to help you further and explain everything in detail. Other interesting plugins that I personally tried can be found under the Plugin label. It's also important to read how to drive traffic to your website.