I took my Permaculture Design Certificate from my friend and teacher Ben Weiss. Ben Weiss is a herbalist, forager, and farmer in Lancaster, PA. I highly recommend learning from him.
Ben offers workshops within 75 minutes of Lancaster, PA, (for private groups) on Foraging / Plant ID, Permaculture, Organic Gardening, Composting, Urban/Suburban Farm Design, Regenerative Land Management, Tincture-Making, Mead-Making. He also offers two courses on a regular basis to the public, in Lancaster: A Course in Spiritual Ecology, and Bones to Bloom: Ecological Design Course.
(I designed his website a few years ago!)