Beginner Tutorial | Simple Application of RSI Indicator

Recently, we have been continuously analyzing various practical technical indicators, gaining recognition from many friends, and also receiving numerous private messages from friends asking practical questions. Thank you very much for your ongoing trust and support for our research institute. Whether you are a beginner novice or an experienced veteran with a foundation, we will continue to produce easy-to-understand and practical analysis content.

Today, I will introduce a fundamental indicator that everyone must learn—RSI. It is also a highly used classic tool in the industry, officially called the Relative Strength Index. Its core principle is to calculate the price change over a certain period to assess market strength, allowing early detection of trend turning points and reversal opportunities. In plain language: it helps you precisely identify market reversal points.

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Seeing everyone’s enthusiasm for learning, I will do my best to explain RSI in simple terms, from basic to advanced. At the end of the article, I will also give away a ready-made custom indicator source code. The content is full of practical tips, so don’t go away.

Now, let’s officially start understanding RSI! Follow along as I bring up this indicator on the chart. Today, we will use it for real trading analysis of Bitcoin and Ethereum’s actual price movements. Just search for RSI in the indicator bar to add it.

Let’s briefly understand its core principle.

The official explanation is long and complicated, but I’ll make it clear in one sentence: RSI is calculated by selecting a fixed period and measuring the upward and downward price movements, forming a strength curve that relies entirely on price changes, intuitively reflecting current market sentiment.

After adding it, this is the common RSI interface.

Many beginners might be confused at first: why are there three lines? It’s actually easy to distinguish. The three lines correspond to three commonly used period parameters: 6, 12, and 24, representing short-term RSI, medium-term RSI, and long-term RSI.

Simple usage division: for ultra-short-term trading, just look at the 6-period RSI; for medium-term swing trading, focus on the 12-period; for long-term layout and trend analysis, watch the 24-period.

The three lines can be overlaid for reference or selected individually, with different colors for easy distinction.

If you find the lines too cluttered, you can manually hide the unnecessary periods, leaving only your commonly used ones.

After understanding the basic shape, let’s focus on the key points! I will share two core practical uses of RSI, which beginners must remember.

First: Classic Overbought and Oversold Trading Method

This is the most basic and most effective core logic of RSI:

Oversold zone: values below 20, prioritize buying on dips

Overbought zone: values above 80, prioritize taking profits and selling

Precise entry timing: best buy signal: RSI falls below 20 and then breaks back above 20; best sell signal: RSI breaks above 80 and then turns down below 80

Of course, many experienced traders prefer to use 30 and 70 as the dividing lines. Feel free to adjust according to your style.

Let’s directly set up the practical operation: follow me to modify the parameters, fixing the threshold values at 20 and 80. After modification, the background interval of the indicator will change accordingly, making the zones clearer and more intuitive.

For short-term traders, focusing on the 6-period RSI is enough. Looking back at historical data, relying solely on the overbought and oversold signals of RSI6, you can catch several high-quality entry and exit points.

Further back in the market history, the signals remain accurate, and the practical effect is very impressive.

This proves that even with the simplest overbought and oversold logic, RSI can perform extremely well. If you prefer not to hold overnight positions and trade 3-minute or 5-minute short cycles, this method is fully compatible. The indicator will automatically switch with the K-line cycle, updating signals synchronously, maximizing flexibility.

Second: RSI Divergence Trading Method

Similar to the MACD divergence logic we discussed earlier, RSI can also identify divergence to predict reversals. I previously wrote a dedicated custom RSI divergence indicator, and after explaining its usage, I shared it for free.

In the industry, the mainstream way to view RSI divergence is usually with 12 or 14 parameters, which are just right in sensitivity. Here’s a simple mnemonic for our research institute’s core method: ✅ Top divergence: when the price peaks are rising higher, but RSI peaks are lower = bearish warning ✅ Bottom divergence: when the price peaks are lower, but RSI lows are higher = bullish reversal

Simply put: top divergence signals short, bottom divergence signals long. It’s similar to MACD divergence logic—learning one can help you understand the other.

Let’s simplify the chart, keeping only the 12-period RSI line. You can clearly see the standard bottom divergence structure. After the signal appears, the market immediately begins a correction and rally.

Now, let’s look at a more classic case, switching to a 2-hour higher cycle.

After a clear top divergence forms at a high level, the market directly enters a deep correction, with strong downward momentum. Recognizing this early can help avoid big drops.

I’ve found my treasured RSI divergence custom indicator and will share it directly. The source code is quite long, so I’ll split it into parts for you.

For beginners who don’t know how to manually create indicators, just contact customer service to import it—one click installation and you’re ready to use.

Mastering RSI divergence can perfectly help you control the bad habit of chasing highs and selling lows, greatly improving your trading success rate.

Finally, I want to clarify the scenarios where RSI is most effective, to help everyone avoid pitfalls: RSI works best in clear trending markets, whether in strong upward or downward trends, providing accurate strength and reversal signals. When the market is in consolidation or choppy sideways movement, don’t rely solely on RSI. It’s recommended to combine it with MACD, EMA moving averages, support and resistance levels for multi-signal resonance. Multiple signals together will lead to more accurate judgments.

Overall, today’s content is aimed at beginners, focusing on simple, easy-to-apply methods centered around the two core signals: overbought/oversold and divergence. Whether you’re new to trading or want to expand your indicator library, you can follow this approach to review and practice gradually. Trading within your understanding, using simple and practical basic indicators, is the key to long-term stable trading.

This article only reflects the author’s personal opinion and does not represent the platform’s stance or views. It is for informational sharing only and does not constitute any investment advice to anyone.