I missed the launch date. Can I still join? Yes, you can join The Wizarding World Book Club any time after the 19th June. You can join here. Related articles I don't have a Twitter account. Can I still take part in the discussions? Why can't I register? Is my profile on Pottermore public? Can you tell me what the themes are for the next books? I read at a fast pace. Does it matter if I read ahead?