What you may not have known is that the entire first three chapters are now up on the Lennonology site, and freely available to preview; '66 and '67 are fairly short (given that the focus is on John and Yoko together), but '68 is a huge and hugely informative piece of research (some of the fruit of 15 years' worth) in which, regardless of how much you know, you'll learn something new with every few entries, and also come away with a much clearer understanding of what happened when, where and why.
To take one example: the date and chronology of the Two Virgins night has never been satisfactorily explained. Previous attempts haven't made much sense even on their own terms, but the new order of events given by Madinger and Raile does (though we'll have to wait for the publication of the notes to see how they arrived at this conclusion).
The book is being privately published by them, in a strictly limited edition, so it's not cheap, but if you can afford it (or can manage to lay off the beer for a while to save for it) then it's clearly going to be a major contribution to all this (whatever this is) and one for the ages. Go HERE for the previewed chapters, and HERE for the Lennonology home page, where clicking through will take you to the order form.