Nettles abound! Because this is a favourite herb of so many well-versed herbalists and plant-lovers, I won't go into much into detail about the use of this mineral rich, tonifying, stinging herb, but here are some good links to check out: Kassie Vance, Susun Weed, Herb Wisdom, Examine.com for research, and Grieve's 'A Modern Herbal'.
Almost any person at all interested in herbs can wax poetic about nettles a.k.a. Uritica dioica, myself included. I've been drinking a lot of dried nettle tea lately and have been craving some fresh stuff. I went on a mission last week for spring shoots but was a couple days early. Today, however...
If you have access to a nettle patch of your own, you should check out herbwife Sarah Head's incredible post on what to do with young nettles. Spoiler alert: you can do EVERYTHING WITH THEM. In fact, in my opinion fresh nettles make a better food than tea. Tastes like spinach, only nuttier.
I was in a nettle mood when I found this patch because I had just watched this fun video from Mountain Rose (excellent source for herbs + incredible blog) that they made with jim mcdonald a couple of years back. Take a study/computering/cleaning/parenting/cooking break, sit back and watch. You'll learn cool stuff, be in a better mood and want to go outside. I know it's raining, but it's nice and warm out there. Don't be afraid of the rain.