As a person who considers herself a "foodie", I've been experimenting with Japanese cooking for about 2 years now and am really enjoying it. I'm a girl who stays healthy by pretty much eating a mediterranean style diet,but adding traditional Japanese cooking to my repetoire has been a wonderful way to expand my cooking vocabulary and it hasn't hurt my waist line one bit.
The first thing i would reccommend is that you assemble yourself a small cooking library on the cuisine so you can get to know the basic ingredients and cooking techniques inside out. I purchased all of my books at heavily discounted prices via
http://www.amazon.com I began my small library with purchasing some books from Harumi Kurihara (Japan's version of Martha Stewart). I also purchased some inexpensive softcover books , one called BENTO BOXES, and another on Japanese pickling. Lastly I purchased a wonderful coffee table style cookbook called WASHOKU that is fantastic because it has great photography of the basic ingredients used in traditional Iapanese home cooking. Being able to refer to the photos and names alone gives me near encyclopedia like assistance that has been a tremendous help when I'm navgating the Asian supermarkets where I live. For fun I also purchased the paperback version of THE JAPAN DIET and another small paperback with no-frills vegetarian recipes.
I am a person who has rejected white rice for years, although I find that the occasional bit ofJapanese short grain white rice doesn't hurt especially during sushi outings. I remedy my distatste for white rice by consuming only brown rice, as often as i like. I use regular western style as accompaniment to general meals. But for japanese dishes that require shaping (like rolls and so on), it is important to use Japanese short grain, because you need the stickiness for everything to hold together.
In closing, I have a theory about all cuisines around the world: they usually start with 5 basic ingredients you have on hand everyday. From what I'm learning, in the Japanese pantry you can start with 5 things too:
Dashi broth, Mirin, Sake, Miso, Soy Sauce. With these 5 flavors you will be able to flavor a whole range of ingredients from breakfast to dinner. But the most important of all would be the dashi broth...it is the basis for most Japanese dishes... so just buy instant!
Anyway, good luck with your food experiments! Japanese cusine is one well worth learning the basics for!