As scholars engaged in the study of the legal regulation of the religious phenomenon, we decided to create a web space (www.diresom.net) to collect documents, comments and other useful materials related to the Covid-19 emergency, in order to assess the outcomes of the normative decisions made by state and religious authorities. By the end of April, we had already published more than 600 documents and comments related to this issue, and more than 45.000 unique visitors had surfed our website. In May we have also edited an open source book to share in a more orderly way the comments that we have already published online, thus giving the possibility to consult these guidelines to all those who want to study or analyze the legal reaction both state and religious, to this pandemic. The exponential spread of the Covid-19 Pandemic also in the second part of 2020 suggested us to edit now this second open source book.