You can use "Jakarta Struts Live" for learning struts. This book is freely available over the internet. This book covers all the major struts concepts with practical examples and gives a hands on practice.All the topics are upto the mark.
I read 'Jakarta Struts Live ' from Rick Hightower. If Sachin is referring same book which is free on serverside.com , I would like to add something.
I read this book but I feel this is not easy or good for beginners.Several concepts are not explained in simple ways.Some chapters got unnecessarily complecated.
I suggest try something else for startup.If you have found any other book ,please let me know.