on 29 November 2013
This was not quite what I was expecting. I was expecting what the title suggested - a guide to top rated plugins.
It lists very few common ones most of which I already knew about (and some are automatically included in Wordpress) but a couple of others worth note.
It is more of a general basic guide to plugins including a section on creating your own.
It was quite difficult to find out how old this information was and I eventually round a 2012 copyright note on the bottom of the disclaimer page.
Don't buy this if you want a detailed up to date guide to popular plugins but do consider if you want a cheap, general guide bearing in mind it was written last year.