I learned Chinese Ink Painting when I lived in Sapporo, on the island of Hokkaido in Japan. I was lucky to have gotten a very patient and kind teacher. I have been painting watercolors on rice paper ever since then.
I now live in Sendai on the main island of Honshu, Japan. I recently joined a Chinese Ink Painting class to brush up on this art. I haven't done any traditional paintings since Sapporo and am happy to be in touch with that art form again. My teacher in Sendai is very kind (I have been lucky again). She is at least 60 years old and about four feet tall. All the students have been in her class for years; and I feel, as though, I have joined a family.
When I am in the States, I order my rice paper and brushes from Oriental Art Supply. You can order paper samplers which gives you a chance to test and find the paper you prefer. For watercolors, their Japanese Cake Watercolors are very nice. I use these in addition to western watercolors in my paintings.