No required edition but listed are some sources.
Paperback: https://www.ignatius.com/Manalive-P1647.aspx
eBooks:
06/09 - Introductory meeting (no reading necessary)
06/16 - Part 1, Ch. 1
06/23 - Ch. 2
06/30 - Ch. 3
07/07 - Ch. 4
07/14 - Ch. 5
07/21 - Part 2, Ch. 1
07/28 - Ch. 2
08/04 - NO MEETING (Dominican Rite Mass @ St. Pats)
08/11 - Ch. 3
08/18 - Ch. 4
08/25 - Ch. 5