Your just starting and i would say its a good start, you were smart to get live rock from a friend. The only problem i see is that it seems like there is too much rock in the tank so you will have issues with the flow in the tank. Your off to a good start, just make a bucket of salt water to store the rocks in (so the bacteria on the rock doesn't die) and start adding the rock one at a time until you get a clean aquascape that supports decent flow. You're on the right track, just keep posting pictures and we will provide feedback.