Kanji Dictionaries in Print
Kodansha Kanji Learner’s Dictionary: Revised and Expanded, ed. by (Kodansha International, 2013). This portable dictionary indicates the meanings of each Joyo kanji when they appear in particular words. There's also an iPhone/iPad version of this resource!
The New Nelson Japanese-English Character Dictionary by , completely revised by John H. Haig (Tuttle, 1997). Some regarded the Old Nelson as the ultimate kanji dictionary. For information on radicals (including their nicknames), I find Nelson to be quite handy.
The Kanji Dictionary by (Tuttle, 1996). An encyclopedic tome listing fascinating compounds for each character (including obsolete ones, which is where much of the fun is to be had). This book made me fall in love with kanji!
Kanjigen (漢字源, かんじげん), 5th edition (Gakken, 2011), is written entirely in Japanese and has useful information about name kanji, etymology, variant forms, and more. Warning: you may need a magnifying glass to make out the tiny, cramped characters!
Online Kanji Dictionaries
Jim Breen’s Japanese Page. This online dictionary supplies comprehensive information about characters, words, and much more, including oodles of sample sentences. In fact, Joy o' Kanji includes significant material from Jim Breen's JMdict (EDICT, etc.) dictionary files and uses that material in accordance with the license provisions of the Electronic Dictionaries Research Group. See http://www.csse.monash.edu.au/~jwb/edict.html and http://www.edrdg.org.
Denshi Jisho. This online dictionary is extremely convenient when you need to look up characters and don't know their readings. For some fun ways to use this resource, see Radical Terms (Does the Radical Matter?).
Wiktionary. Written entirely in Japanese, this online dictionary indicates Joyo and non-Joyo yomi. It also classifies the on-yomi in terms of the era in which they originated in China.
Textbooks and Reference Books About Kanji
A Guide to Remembering Japanese Characters by (Tuttle, 1998). An in-depth look at the etymology of Joyo characters, exploring how the meanings and shapes of kanji have changed over time.
Basic Kanji Book, Vols. 1 and 2, by and others (Bonjinsha, 1989). These orderly, well-thought-out books filled me with a sense of clarity and confidence about 500 kanji. If you're making a first foray into the world of kanji, I strongly recommend these textbooks. The sequel, Intermediate Kanji Book, is as confusing as the most labyrinthine bureaucracy imaginable. Avoid it.
The Study of Kanji by (Hokuseido, 1971). Pye focuses on what I've called on-echoes and maps out the series of characters in which one finds such echoes. Unfortunately, this out-of-print book is hard to find.
Kanji Pict-o-Graphix: Over 1,000 Japanese Kanji and Kana Mnemonics by (Stone Bridge Press, 1992). When I reviewed this book for Kanji Clinic, I explained that, for me, Rowley's visual mnemonics are secondary to his fascinating component analysis.
Building Word Power in Japanese: Using Prefixes and Suffixes by (Kodansha, 1990). Extremely useful guide to the specific meanings characters can have when serving as prefixes or suffixes in compounds.
Guides to Japanese Grammar
Japanese Verbs at a Glance by Naoko Chino (Kodansha, 1996). Clear, logical, and helpful with great sample sentences. One particularly useful chapter explains how to create verb compounds to indicate the start of action, a half-completed action, the end of action, and so on.
A Dictionary of Basic Japanese Grammar by Seiichi Makino and Michio Tsutsui (Japan Times, 1986 and 1989) and A Dictionary of Intermediate Japanese Grammar by the same authors (Japan Times, 1995). Satisfyingly comprehensive and clear, particularly because of the great sample sentences. Indispensable resource.
JapanesePod101.com—Learn Japanese with Free Daily Podcasts. This extremely popular site offers free podcasts for beginners and proficient speakers alike. Subscribers gain a much fuller understanding by having access to the PDFs, grammar tools, and much more.
Kanji Clinic by Mary Sisk Noguchi. These Japan Times columns about kanji have a wide following. The site also features a long list of useful kanji resources.
Chinese Etymology by Richard Sears. This easy-to-use site shows how each character looked several millennia ago.
Eve Kushner's Other Writing About Kanji
Crazy for Kanji: A Student's Guide to the Wonderful World of Japanese Characters by Eve Kushner (Stone Bridge Press, 2009). This book provides a map to the infinitely complex system of kanji, always approaching the topic with passion and a playful touch. Packed with information, the book covers the history of how kanji traveled to Japan and acquired two readings; the building blocks of kanji (components, radicals, phonetic elements); tips on distinguishing look-alike characters; the way kanji reflect everyday life in Japan, both past and present; typed versus handwritten kanji; tips for studying kanji; the use of these characters in Japan, China, and Korea; and much more. There are also games and handy reference charts, as well as dozens of photos of kanji in action. You'll find much more about the book here.
Kanji Curiosity. Eve started writing this weekly blog in 2007 on her own website. She soon began posting on JapanesePod101.com's site. Kanji Curiosity ended in April 2010 so that Eve could focus on Joy o' Kanji.
“The Way of Kanji,” Eve’s essay in the April 2007 East Bay Monthly about kanji as her path to serenity.