# Learn

- [Signal Sources](/docs/learn/signal-sources.md)
- [TradingView](/docs/learn/signal-sources/tradingview.md): TradingView is a social network of 30 million traders and investors using the world's best charts and tools to spot trading opportunities across global markets.
- [TrendSpider](/docs/learn/signal-sources/trend-spider.md): TrendSpider provides technical analysis software for retail traders and investors focused on the US equity and foreign exchange markets.
- [Discord Trading Bot](/docs/learn/signal-sources/discord-trading-bot.md): This example shows you how to setup an automated trading bot where the signals are powered by messages received in a Discord channel.
- [Custom Code](/docs/learn/signal-sources/custom-code.md)
- [Platform Concepts](/docs/learn/platform-concepts.md)
- [Rate Limits](/docs/learn/platform-concepts/rate-limits.md)
- [Backtesting](/docs/learn/platform-concepts/backtesting.md): Backtesting is a critical tool for any trader that is running automated trading strategies. It uses historical data to determine the effectiveness of a strategy in different market conditions.
- [Order Behavior](/docs/learn/platform-concepts/order-behavior.md): This page documents the behavior of TradersPost when receiving different types of strategy signals.
- [Order Queueing](/docs/learn/platform-concepts/order-queueing.md): Order queueing is used when an order cannot be sent to the broker when the market is closed and TradersPost will queue these orders to be sent at the next market open.
- [Order Classes](/docs/learn/platform-concepts/order-classes.md): This page provides an overview of the different order classes available in TradersPost and it explains the functionalities and use cases of these orders.
- [Paper Trading](/docs/learn/platform-concepts/paper-trading.md): Paper trading is a useful tool for being able to forward test your automated trading strategies without having to risk real money.
- [Position Sizing](/docs/learn/platform-concepts/position-sizing.md): TradersPost offers several different features for dynamically and manually managing your position size.
- [Fractional Shares](/docs/learn/platform-concepts/fractional-shares.md): TradersPost supports trading in fractional share quantities with brokers that support it. The following brokers support fractional trading:
- [Known Limitations](/docs/learn/known-limitations.md): TradersPost is an actively developed and maintained platform and while we strive to continue improving the platform, there are known limitations that this page aims to document.
- [Trading Bot Sessions](/docs/learn/trading-bot-sessions.md): Join us for in-depth conversations with successful prop firm and futures traders who share their real journeys, strategies, and insights from the markets.