First Struts book is available for free. Vic Cekvenich - Sept. 2001 (1st Struts Book).
This book is current to 1.2.7, and I hope others jump in and update it to 1.3, it's a soft copy so any changes just re-upload (via attachmnets on the menu in this page) Best use is for someone teaching Struts to use this, as it has labs. I used to teach this in 30 hours 90% lab time to large groups for good rates.