Hi,
A new Go book is now available in the U.S. (and elsewhere soon):
Programming in Go: Creating Applications for the 21st Century
by Mark Summerfield
Published by Addison-Wesley in the Developer's Library Series
496 pages softback
ISBN-10: 0321774639
This book is up-to-date as of Go 1 (and 1.0.1).
The book is aimed at existing developers, both those who want to learn
Go, and Go programmers who want to deepen and broaden their Go
knowledge. The book can be used both as a tutorial and as a reference to
the language, and also introduces many packages in the standard library.
The book has benefited from the feedback of many technical reviewers
including programmers new to Go and also from some of the core Go
developers.
All the book's examples and exercise solutions, and a free PDF of the
table of contents and the whole of chapter 1, are available from the
book's web site.
--
Mark Summerfield, Qtrac Ltd,
www.qtrac.eu
C++, Python, Qt, PyQt - training and consultancy
"Programming in Go" - ISBN 0321774639
http://www.qtrac.eu/gobook.html