Here is a step-by-step guide to a Iwagumi style set up I recently did. This is a 5 gallon Fluval tank, so really small, and sits on a bookcase in the living room. I will post more pics as it grows in!:
What an abundance of colours in this tank!"Reborn" by Coffman, via Aqua Design Innovations
Plants for your aquarium - Live plants take a bit more effort but they make a huge difference in the water quality and the inhabitants really seem to notice the difference! Some a easy, others are a bit more difficult to grow. Do your research and get started!