Personally I didn't find it difficult to follow as a recipe book, the non-specific free-form approach struck a chord (perversely I usually prefer a more structured approach to daily life!) although my research on cr0 as well as reading the book in its entirety more than once before going near the cooker definately helped. The book could be better organised as there are references in later chapters to techniques and ingredients that are used earlier.
Slavishly following the book I devoted practically a whole weekend (friday evening 7:30pm-9:00pm making the bhajis to get the seasoned oil, saturday from 2:00pm - 11:30pm for making the base followed by pre-cooking beef, and sunday morning from 10:30am-12:00am doing rice and cooking the actual curries (mixed veg and beef madras).
Although it took a (very) long time I still think it was extremely worthwhile, the wife wasn't in entire agreement (she calls my cookery hobby an obsession!) but it produced some of the best curries I've ever made, and I rate it as one of the best books I've bought, an entertaining and interesting read as well