I believe Charles mentioned to me by email that he plans on maintaining an errata page for the book as well.
Yes, but that would be for typographical errors etc., not for clarifying the doubts of individual readers (unless of course it's the text which is causing the confusion)! The Ranch is far better for clearing up problems. However, the errata would be open for all to add submissions to, so if you find an error while reading, please let us know (instructions are on the inside cover along with the legal stuff). So far there are only a few entries on the errata, with most of them being along the lines of "that
word should have been in bold" - pretty minor stuff so far!
Charles Lyons (SCJP 1.4, April 2003; SCJP 5, Dec 2006; SCWCD 1.4b, April 2004)
Author of OCEJWCD Study Companion for Oracle Exam 1Z0-899 (ISBN 0955160340 / Amazon Amazon UK )