So you're interested in hydroponics but aren't quite sure where to start? Here's a little guide to give you the basics, including the meaning of the word "hydroponics" so that you know what you're doing when you go online to order your first hydroponics kit. Essentially there are four main elements to hydroponics, which are water culture, aggregate culture, continuous flow systems and aeroponics. This article will give a quick overview of these elements and look at the main advantages to growing via a hydroponics system.