Volumes 2 and 3 of Remembering the Kanji are now available for pre-ordering on Amazon or direct from the publisher, University of Hawai'i Press. Copies of the earlier edition of Volume 2, which deals with the readings for the kanji set out in Volume 1, are still available in shops and online, but Volume 3 has been out of print for a while. Remembering the Kanji 3: Writing and Reading Japanese Characters for Upper-level Proficiency covers an additional 1000 kanji based on the primitives described in Volume 1, and adds a few bonus primitive elements. It is also possible to place an order through Nanzan University, where James Heisig teaches. Hardcore paperless people can always opt for the e-book version of RTK3.