We finally got the book published on Amazon in Kindle format. So if you use Kindle and want that quick & easy way to get offline content in your hands, then this is for you. If you don't own a kindle, you can still read the book offline with Kindle for PC/Mac/iOs/Android.
Sorry about the 99c (77p) price tag, but I couldn't find a way to get it up there for free, while keeping the agreement non-exclusive.
Introduction to Rx @ Amazon.com
Introduction to Rx @ Amazon.co.uk
It should also be available on the other Amazon sites.
The completely free version is available for manual download at www.IntroToRx.com