Found this nice book on O’Reilly pitched with just the right mix of content that makes a book good. It is not a great book. What it lacks in punch it makes up in the mix of topics and the ease with which they are writtent. While the initial parts might come out to be a rehash of old known facts for the old timers, the new readers would do well to go through them since they provide an understanding of the whole concept of the Mozilla Project and of course perhaps the two best products (barring Bugzilla) that have come out of that stable.

Very end user oriented – this is not a crash course in getting up and running with Firefox and Thunderbird. Rather, this is a nice stroll through end UseCases that any user of the two applications will have and sure enough there are screenshots a plenty to make them feel at home. The last part of the book deals with writing extensions for the applications. This is a section that really does not fit into the scheme of things. Writing extensions while fun could have been taken either as an online section or as separate book altogether. In short, this is a useful book to have while using the two applications.