This book was recommended to me by a gardening friend when I expressed an interesting in growing my own veg. It really is the gardeners Bible. I would be completely lost without it. The book has easy to follow - but not dumbed down - advice on every crop you could wish to grow plus sections on soil, rotation, composting and so on. There is also an excellent quick reference guide on how to sow, maintain and harvest every crop.
If you want to grow your own this book is essential; I haven't seen anything better and after 3 years, I am still returning to it again and again.