Wordpress website design

Hi,

I would like help designing a Wordpress website to offer my private maths tuition service. The aim is to get clients to book a session with me. I have already acquired the domain name, hosting and written all the material that needs to go into the website here: https://docs.google.com/document/d/117I6YmnHkm06vJ7PnhUjKOQ0R5QJE86xBifRHxQvCKE/edit?usp=sharing (please feel free to comment/ask questions via this shared Google Doc link)

Currently, I have only considered two essential pages:
1) Landing page: a video introduction and a few paragraphs explaining my tuition service.
2) Booking page: for my clients to view my availability, book a session and pay. I would also need a corresponding private calendar view where I could see my scheduled appointments and update my availability.

On every page I would like a WhatsApp symbol to pop up so visitors can contact me on a dedicated WhatsApp Business account which I have setup for this purpose.

Here is an example of a website which is similar to what I have in mind: https://www.a-levelmathstutor.co.uk/

Thank you

Qasid