WhatsApp English Study Circles / Groups ....online and free

Hello all....I started to form EFL study groups or circles online using WhatsApp. Students are required to use my texts which can be downloaded and printed free online but which cost $2 each if people need a hard copy from me. I send lessons in either a text form or short, 3 to 5 minute videos, which they can watch or just listen to on their phones.

I have written a lot of texts and have recently begun to write lessons for people who need English phrases, etc., for their work. 

I advertise on Facebook and in local swap meets, and so far the response has been very positive.

This type of approach can be used in any class - perhaps there can be a discussion on methods and materials.