Welcome to the site. If you are looking to adding plants to your small tank, RAOK and Buy/Sell are good places to look. With the buy/sell you can check a persons trade score. Shown as a percentile out of 100%, and you can read reviews from people that have bought or sold from them.
If you have any questions feel free to ask me or any other members on this forum. As stated earlier check out the stickies in each topic, they will provide great knowledge. Also, at the top their is plant/fish profiles which can help you narrow down what you might be looking for. And what water parameters are needed to house a specific fish/plant/invert in your aquarium. Once again, welcome to the site!
The worst defeat in the world, is when you give up.