mainframes

This is not a "page-turner" but I like it and use it everyday as a quick reference when I forget fundamental commands etc. It is a good, easily read and researched book. As a practical guide, it's much easier to reference than IBM's guides. Information is presented logically and indexed nicely. This book puts a lot of basics at your fingertips and since I was a "rusty" administrator, it has become handy as a refresher.

Last year I was a beginner on the topic of AS/400 and I bought this book, because it was the only AS/400 book I could find in Denmark. What I need was a exact description, telling me precisely what to do, when I had to do something on the AS/400. I could use the book for that, because I didn't want to read manuals or take a course in computer operations systems. The book has only 490 pages, not 600 pages!

I bought this book because no others were avalable in Australia and I regreted it. It was poorly designed and structured. The concepts are not clearly explained. After reading half of the book, all I've learn are a few commands and menu ... What I need is understanding the operating system at least at the basic level, not just "if you want to do this, type this at the command line then press Enter ..."