Today I received an RSS Feed from Barrie North, one of the best educators on Joomla that I know off.

He brought you earlier the Joomla Template Tutorial and he is a moderator for the Joomla SEO Forum

And now he is Selling his Joomla Admin Manual to you with a discount!
He even tells you why you should buy his book or just use the Joomla Manual for 1.0.11

But let me tell you already, this book is more then just Joomla, it gives you more information on how to work with the system, optimizing it for Search Engines and shows you how to create a better website.

I may not agree or like some off the things he writes about, but he sure knows his Joomla Stuff and how to design Great SEO Templates.
And if you are serious about Building the best website you can for yourself or your customers, then this Joomla Admin Manual is really worth the little money he is asking for it.