Trial sessions are the initial meetings between the teachers and students as a way of exchanging introductions.
Teachers give a brief teaching demonstration so that both of them can decide whether working together is a good fit.
Trial sessions last for 15 (set by teachers) minutes and are free of cost. Students can book the trial lessons by:
Find a teacher you want to book a trial with.
On their detailed information page you will see a 'Book Free Trial' button.
Clicking the 'Book Free Trial' button will open their availability calendar from where you can select the date and time for your trial sessions.
Click 'Book Lesson' which will redirect you to the checkout page where you have to 'Confirm Order'. Your trial lesson is then booked.
The system allows each student to take one trial lesson per teacher.

Note: A teacher has the right not to give free trial lessons. If that is the case, you won't find the booking button on their profile anyways. You still can message them for a free trial lesson and see what they say.