If you decide you want to get more, aquariumplants.com is a good, online source. I have bought from them twice and been very happy with service and price both times. Stem plants such as amazon sword, java fern, anubis nana, anacharis, hygrophilia and val grass are pretty easy to grow and maintain.
As a matter of fact val grass is so easy, I started with only a root sprig from a local fish store. The guy was cleaning out thier plant tank and had a bunch of junk laying on the floor. I bought some fish and he bagged the "plants" up. I didn't even know what type roots I had. I stuck roots in he substrate and the val grass came up. I now have it in both my 29 and 75 gallon tanks all from that one tiny sprig.