The importance of Hasidism to modern Judaism is difficult to overstate. The effect upon the entire Ashkenazi community of a movement designed at its heart to popularize observance and study was profound, even as the guardians of the traditional Torah communities responded with dismay.
One part of the great value of Hasidism has been the rich vein of stories and legends. Martin Buber did much bring those to a wider community, and now, thanks to the internet, we have these stories at our fingertips. The Hasidic Stories website offers a rich vein for any Jew, and especially for those of us who look for material to use in teaching.
Have a look, and have fun!