Bake at 350 degrees for 10 minutes- and then for last few minutes check to avoid burning. Remove from oven and rip away parchment after 5 minutes.
To mail order, I highly recommend my friends at BC Kelp , where they also sell a lot of interesting varieties for you to branch out as you get more adventurous. They have recipes, too.
COMMENT if you want more recipes, like my Korean seaweed tofu soup. A comforting way to eat seaweed in the winter!