Amazon Sword
This is a good beginner's plant because it's very easy to care for. Temperatures of 72-82 degrees farenheight are perfect for these guys. They should be planted in the background, as thier big leaves will cover the smaller plants if planted in the front. It will grow in gravel as well as other substrates, but just make sure that the substrate is at least 2 inches deep because the Amazon Sword will have really long roots. Have fun, and good luck!