If you have not yet decided to try reading ODTU, or have purchased or received the printed version already but would like a digital copy as well, you will be able to download the book from Amazon, for free, this coming Friday and Saturday, 06 and 07 April 2018, world-wide. Note that this is a second edition, and it was revised to correct a number of grammatical, typographical, or other errors which were noted after publication of the first edition.

Mark your calendar.

LADP.