I have been leading a group of women through this study since Jan 1, 2025. We are now in Volume 3, but a new member (a college student) just joined our group. I gave her my volume 3 and volume 4, so I had to order another volume 4. I can still get volume 3 & 4 on my tablet, but wanted my own copy since I really want to 'internalize' the New Testament in context much more efficiently. This time it is in the spiral bound version which I am finding to be much easier to work with!