I just realized that the order book is something many new traders often overlook, but in fact, it’s quite important to understand how the market operates.

The order book basically is a list of all buy and sell orders waiting to be matched on the exchange. It shows the actual supply and demand and helps you read market sentiment. The bids are buy orders (from high to low), and the asks are sell orders (from low to high). The difference between the best bid and the best ask is the spread.

The cool thing about reading the order book is that you can immediately see strong support and resistance zones. When many orders are concentrated at a certain price level, that’s usually a place where the price has difficulty breaking through. For example, if you see 10,000 BTC placed for buy around $30,000, that could be a solid support zone.

One thing I find very interesting is recognizing the actions of “whales.” When suddenly an unusual buy/sell order appears that far exceeds the average volume, it’s often a sign that whales are accumulating or offloading. Some whales even use “spoofing” strategies—placing large orders to create a false impression of supply and demand, then canceling them before they get matched. This behavior really influences small traders’ psychology.

The spread is also an important indicator. A small spread (5-10 USDT) indicates a high-liquidity market, with quick trades and low fees. Conversely, a large spread (100-200 USDT) signals low liquidity and higher volatility risk.

The way the order book works is quite simple: when you place a limit order, it will “wait” in the order book until someone places an opposite order at the same price. Market orders are different—they get matched immediately at the best available price, so they don’t appear in the order book.

Most major exchanges have a similar order book structure: the left column is the price, the middle is the volume, and the right column is the cumulative order total. This makes it easy to compare and analyze supply and demand.

I recommend you spend time learning how to read the order book carefully. It not only helps you identify better entry points but also shows the strength of demand and supply at each moment. When you see the order book “thick” (many orders at various price levels), that’s a sign of good market liquidity. If you want to understand more deeply how the market works, start by observing the order book on Gate or other exchanges you’re using.