In Boulder we have a couple of Shambhava centers nearby with awesome teachers. I can’t recommend these guys enough. Their practice is rooted in a Tantric branch of Hinduism called Kashmir Shavism, which posits that all of manifestation is a vibration called Spanda. Click the link to read Christopher Tompkins description of Spanda.
Located in Kona on the Big Island, this 22 day training is taught in a room overlooking the ocean, but up in the mountains where it’s a little cooler and quieter than the beaches.
For more info, click on the following link and check them out: