Online forex trading refers to the process of buying and selling currencies through an internet-based platform. Forex, or foreign exchange, is the largest financial market in the world where participants can trade various currencies against each other.

Here's a basic overview of how online forex trading works:

1. Select a Forex Broker: Choose a reputable online forex broker that provides a trading platform. Consider factors such as regulation, security, fees, customer support, and available trading instruments.

2. Open an Account: Sign up for an account with the chosen forex broker. This typically involves providing personal information, completing verification processes, and agreeing to the terms and conditions.

3. Deposit Funds: Fund your trading account by depositing money through various payment methods offered by the broker. The minimum deposit requirement varies between brokers.

4. Familiarize Yourself with the Trading Platform: Once your account is funded, get acquainted with the broker's trading platform. Most brokers offer user-friendly platforms that provide real-time charts, news, and analysis tools.

5. Analyze the Forex Market: Before executing trades, analyze the forex market to identify potential opportunities. Traders use technical analysis (examining price charts, indicators, and patterns) and fundamental analysis (assessing economic indicators, news, and events) to make informed trading decisions.

6. Place Trades: Use the trading platform to place trades based on your analysis and strategy. You can enter various types of orders, such as market orders (buying or selling at the current market price) or limit orders (specifying a particular price at which you want to buy or sell).

7. Monitor and Manage Trades: Once a trade is executed, monitor its progress. You can set stop-loss orders to limit potential losses and take-profit orders to secure profits automatically.

8. Risk Management: Implement proper risk management strategies to protect your trading capital. This includes setting appropriate position sizes, using stop-loss orders, and avoiding excessive leverage.

9. Stay Informed: Continuously educate yourself about the forex market and trading strategies. Keep up with economic and geopolitical news, as they can significantly impact currency prices.

10. Review and Improve: Regularly evaluate your trading performance and analyze your trades to identify areas for improvement. Learn from both successful and unsuccessful trades to refine your strategy.

Remember, forex trading involves risk, and it's essential to understand the market dynamics, trading principles, and risk management techniques before getting involved. Consider starting with a demo account provided by many brokers to practice trading without risking real money. Additionally, seeking guidance from experienced traders or educational resources can be beneficial when starting out.