Here is a video and links about what is needed https://www.youtube.com/watch?v=hQ2uC4n4VoY
The Zwift app is perhaps best installed on a tablet or mac/pc. For video chat, you can e.g. use your own mobile phone.
Costs about 20$ per month
Register as a member and join - we will help you as good as we can to get online with you bicycle !