Crypto Trading Deep Dive
Order Books Explained
Microstructure, order books, perps, funding, and algorithmic execution.
In this lesson
- How an order book works
- Market vs limit orders
Key takeaways
- 1An order book lists resting buy and sell orders
- 2A market order fills now at the best price
- 3A limit order waits for your chosen price
Lesson summary
An order book is a live list of resting buy and sell orders.
Mental model
Order Books Explained in plain terms
An order book is a live list of resting buy and sell orders. It shows available liquidity, not guaranteed future liquidity.
- How an order book works
- Market vs limit orders
Mechanics
How to reason about order books explained
Bids are buy orders below or at market.
Asks are sell orders above or at market.
Market orders consume resting liquidity; limit orders add liquidity until filled or canceled.
- An order book lists resting buy and sell orders
- A market order fills now at the best price
- A limit order waits for your chosen price
Example
A concrete order books explained example
If the best ask has only 2 ETH available and a trader market buys 10 ETH, the remaining amount walks up to higher ask levels.
Common mistakes
What to unlearn about order books explained
Visible depth can disappear. Orders may be canceled, spoofed, or moved when market conditions change.
Risk notes
What can go wrong with order books explained
Market orders in thin books can create severe slippage, while limit orders may fail to fill during fast moves.
- Identify bids and asks.
- Explain market vs limit order.
- Check depth at your trade size.
Practice
Make order books explained stick
- Identify bids and asks.
- Explain market vs limit order.
- Check depth at your trade size.
Review
Key terms
- Liquidity
- How easily an asset can be bought or sold without moving its price much.
- Order Book
- A live list of resting buy and sell orders at each price level.
- Slippage
- The difference between expected and executed price, common in low-liquidity or fast markets.
- Market Order
- An order that executes immediately at the best available price.
- Limit Order
- An order to buy or sell only at a specified price or better.
Source notes
Editorial references
These references are starting points for verifying the mechanisms, risk checks, and product context behind this lesson.
Before you continue
Can you do these?
- Identify bids and asks.
- Explain market vs limit order.
- Check depth at your trade size.
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An order book lists…