This is a good introduction to permaculture - with two reservations. Firstly, it's an American book and the varieties, climate and lifestyle that are covered are often very different from those we are used to in the UK. Secondly, I found it quite tedious to read at times as it's difficult to just pick out the practical advice from the wealth of detail, scientific data and so forth which, whilst making this a very comprehensive book, is not always pertinent to the practical gardener.
So, all in all, an excellent introduction to the priciples of permaculture, but to put them into effect you will probably need to already be an experienced gardener to work out what will and will not work in your UK plot and adapt the varieties and the techniques accordingly.