The concepts of support and resistance are undoubtedly two of the most highly discussed attributes of technical analysis and they are often regarded as a subject that is complex by those who are just learning to trade. This article will attempt to clarify the complexity surrounding these concepts by focusing on the basics of what traders need to know. You'll learn that these terms are used by traders to refer to price levels on charts that tend to act as barriers from preventing the price of an asset from getting pushed in a certain direction.

At first the explanation and idea behind identifying these levels seems easy, but as you'll find out, support and resistance can come in various forms and it is much more difficult to master than it first appears. (To learn more, read Analyzing Chart Patterns and Basics Of Technical Analysis.)

The Basics
Most experienced traders will be able to tell many stories about how certain price levels tend to prevent traders from pushing the price of an underlying asset in a certain direction. For example, assume that Jim was holding a position in Amazon.com (AMZN) stock between March and November 2006 and that he was expecting the value of the shares to increase. Let's imagine that Jim notices that the price fails to get above $39 several times over the past several months, even though it has gotten very close to moving above it. In this case, traders would call the price level near $39 a level of resistance. As you can see from the chart below, resistance levels are also regarded as a ceiling because these price levels prevent the market from moving prices upward. 

Figure 1

On the other side of the coin, we have price levels that are known as support. This terminology refers to prices on a chart that tend to act as a floor by preventing the price of an asset from being pushed downward. As you can see from the chart below, the ability to identify a level of support can also coincide with a good buying opportunity because this is generally the area where market participants see good value and start to push prices higher again.

Figure 2