The Power of Shazam has begun to be collected in both print and eBook! Here is some information on what you can find at your favorite retailer!
The Power of Shazam! Book 1: In the Beginning
The Power of Shazam! Book 2: The Worm Turns
This book will be released on May 30, 2023. Based on information I found on Amazon it will be a trade paperback of 424 pages. It collects "Playing with Fire" from Showcase '96, Superboy Plus #1, Supergirl Plus #1, Superman: The Man of Tomorrow #4 (1996), The Power of Shazam! #13-23 (1996), and The Power of Shazam! Annual (1996).
Both books have great artwork on their covers! I've not heard anything about Book 3 but will let you know when I do!