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docs/index.md

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 ## 🏁 Quick Start
 
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-## 📚 Understanding aelf
+## ⭐️ References
 
-- [Core](/learn/core/) - aelf's core architecture
-- [Cross-chain](/learn/cross-chain/) - aelf's cross-chain architecture
-- [Consensus](/learn/consensus/) - Understanding aelf's consensus mechanism
-- [Network](/learn/network/) - Exploring aelf's network architecture
-- [Addresses](/learn/addresses/) - Managing aelf's blockchain addresses
-- [Transactions](/learn/transactions/) - Handling transaction processes
-- [Smart Contract](/learn/smart-contract/) - aelf's smart contract architecture
-- [ACS Introduction](/learn/acs-introduction/) - An introduction to aelf contract system
+- [Web API](/docs/web-api/) - Interact with the aelf blockchain through the web
+- [Smart Contract API](/docs/smart-contract-api/) - Access smart contract functionalities using API
 
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 ## 📖 Tutorials
 
-- [Smart Contract](/tutorials/smart-contract-development/) Development
+- [Smart Contract](/quick-start/develop-your-first-aelf-smart-contract/) Development
 - [Operate a Node](/tutorials/operate-a-node/)
   - Run a [Testnet](/tutorials/operate-a-node/run-a-testnet-node/) Node
   - Run a [Mainnet](/tutorials/operate-a-node/run-a-mainnet-node/) Node
@@ -56,7 +50,7 @@ aelf is a high-performance, cloud-native, layer-1 blockchain network with its Ma
 
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 ## 🛠️ Tools
 
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-## ⭐️ References
+## 📚 Understanding aelf
 
-- [Web API](/docs/web-api/) - Interact with the aelf blockchain through the web
-- [Smart Contract API](/docs/smart-contract-api/) - Access smart contract functionalities using API
+- [Core](/learn/core/) - aelf's core architecture
+- [Cross-chain](/learn/cross-chain/) - aelf's cross-chain architecture
+- [Consensus](/learn/consensus/) - Understanding aelf's consensus mechanism
+- [Network](/learn/network/) - Exploring aelf's network architecture
+- [Addresses](/learn/addresses/) - Managing aelf's blockchain addresses
+- [Transactions](/learn/transactions/) - Handling transaction processes
+- [Smart Contract](/learn/smart-contract/) - aelf's smart contract architecture
+- [ACS Introduction](/learn/acs-introduction/) - An introduction to aelf contract system
 
 </article>
 
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+<article className="col col--4 margin-bottom--lg">
 
 ## 🔖 Resources