An interesting book. It was published during 1999's Fever*Fever tour, and has a few different features - mostly interviews. There are also several sections of full color photos; some from the tour, some from a television commercial shoot, and some posed (including some adorable shots of Ami and Yumi with their pet cats).
The interviews I mentioned above actually take up the bulk of this book. The first is "180 minutes speaking of Ami Ohnuki;" the second "180 minutes speaking of Puffy;" and finally "180 minutes speaking of Yumi Yoshimura." Aside from the interviews and full color photo sections, there is a tiny section at the very end of the book with a rather detailed Puffy timeline (even mentioning the exact date of Yumi's auto accident in 1996), along with a subsection devoted to displaying some rare Puffy merchandise. Among this merchandise are such things as the Fever*Fever audiocassette, Fever*Fever autographed trading cards, PUFFY guitar picks, a phone card, and various articles of clothing (all Puffy related, of course).
As far as I know, there were no further volumes published, which makes the "Volume 1" designation rather meaningless in retrospect.
YesAsia and Amazon Japan still sell this book, which will set you back around $15.
Other
A Few Scans From PUFFY Daikichi Vol. 1 (Click for a larger version):