# Ostium Trading Engine

- [Overview](/ostium-docs/ostium-trading-engine/overview.md): Ostium provides exposure to crypto and Real World Assets through synthetic perpetuals, which require the coordination of complex protocol interactions and optimized fee structuring.
- [Opening Trades](/ostium-docs/ostium-trading-engine/opening-trades.md): Traders can start trading a wide variety of assets and leverage levels.
- [Holding Trades](/ostium-docs/ostium-trading-engine/holding-trades.md): Traders can add collateral and update TP/SL while their trade is open. Compounding fees charged vary as a function of current asset volatility and Open Interest Imbalance.
- [Closing Trades](/ostium-docs/ostium-trading-engine/closing-trades.md)
- [Step-By-Step Tutorial](/ostium-docs/ostium-trading-engine/step-by-step-tutorial.md)
- [Connecting to Ostium](/ostium-docs/ostium-trading-engine/step-by-step-tutorial/connecting-to-ostium.md)
- [Fund Wallet/Account](/ostium-docs/ostium-trading-engine/step-by-step-tutorial/fund-wallet-account.md)
- [Opening a Trade](/ostium-docs/ostium-trading-engine/step-by-step-tutorial/opening-a-trade.md)
- [Editing a Trade](/ostium-docs/ostium-trading-engine/step-by-step-tutorial/editing-a-trade.md)
- [Closing a Trade](/ostium-docs/ostium-trading-engine/step-by-step-tutorial/closing-a-trade.md)
- [Order Types](/ostium-docs/ostium-trading-engine/order-types.md): A comprehensive guide to Ostium's seven order types, their triggering mechanisms, and execution behaviors.