This book has a lot of Oracle tuning tips and advise about some certain plattforms and technologies. Although there's a lot of considerable information about almost anything related with Oracle tuning (including OPS), it doesn't provide with a concise method or guide. The book is structured to help you at different stages of your Oracle implementation (design phase, production, proactive and reactive tuning, capacity planning, etc). But that good schema looks very confuse when the author starts to make suggestions or tips that aren't sorted by any kind of category (and they often takes a lot of pages)... Those comments are very good, so it needs a bit of more organization. I recommend this book for instance and database tuning, but not for SQL tuning (the author has another excellent book on this subject). There aren't too many advices regarding the plattform (unix or nt), so, keep in mind you'll need more support.
What Is HTML5? It is really difficult to complain about something that is free but I did spend the time to read the entire pamphlet ...