Hi Neelanjana,
Have you ever read Phenomenews? You can pick it up for free at places such as health food stores, new age type shops, and the like. There are all kinds of classes, centers, gatherings, and the like listed throughout around the articles as well as a calendar of goings-on and a classifieds. If you check it out online there aren't as many listings, but they do have a great directory that might get you started. Most of the listings are in SE Michigan.
Welcome to Phenomenews.com
Hope this helps,
Jeri