diff --git a/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md b/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md
index e240aa1..86fe460 100644
--- a/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md
+++ b/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md
@@ -6,9 +6,14 @@
 
 <br>
 
-* "smart contract wallets": account abstraction that would avoid the need for consensus-layer protocol changes by enabling arbitrary logic to determine if an account can move funds. this enables wallets to have multi-sigs, social recovery, hardware enclaves, etc.
-* erc-4337 it implements censorship-resistant aa without making any changes to the consensus layer of ethereum, by creating a new mempool, a smart contract wallet standard, and a shared entry point contract for managing user operations.
-* bundlers (new actors that are either block builders, or users that can send transactions to block builders through a bundle marketplace) package up a set of objects into a tx making a call to a special contract and sending objects to a separate mempool.
+* this change implements censorship-resistant account abstraction without making any changes to the consensus layer of ethereum, by creating a new mempool, a smart contract wallet standard, and a shared entry point contract for managing user operations.
+* this enables wallets to have multi-sigs, social recovery, hardware enclaves, etc.
+* **UserOperations** are pseudo-transactions objects that represent a user's intent.
+* **Bundlers** are new actors that are either block builders, or users that can send transactions to block builders through a bundle marketplace. they package up a set of objects into a tx making a call to a special contract and sending objects to a separate mempool.
+* the **EntryPoint** is a smart contract that receives **UserOperations** from **Bundlers**.
+* Aggregators combines multiple signatures into a single signature, to validate multiple **UserOperatons** in one step.
+* **Smart contract account** are the target of the **UserOperation** and will validate and execute the **UserOperation**.
+* **Paymaster** create flexibility for how gas is paid and by whom.
 
 <br>
 
@@ -16,18 +21,19 @@
 
 <br>
 
-* [erc-4337 contract deployment](https://etherscan.io/address/0x0576a174D229E3cFA37253523E645A78A0C91B57#code)
-* [account abstraction gas benchmakrs, by eth-infinitism](https://github.com/eth-infinitism/account-abstraction/blob/develop/reports/gas-checker.txt)
-* [erc-4337: account abstraction using alt mempool](https://eips.ethereum.org/EIPS/eip-4337)
-* [account abstraction for everyone else, by cami](https://camiinthisthang.substack.com/p/account-abstraction-for-everyone)
-* [unpacking erc-4337, by a. chiplunkar](https://frontier.tech/unpacking-erc-4337)
-* [account abstraction, by safe](https://safe.mirror.xyz/9KmZjEbFkmI79s28d9xar6JWYrE50F5AHpa5CR12YGI)
-* [erc-4337 is on mainnet](https://twitter.com/erc4337/status/1631087958949531648)
-* [erc-4337 bundler implementation in rust](https://github.com/Vid201/aa-bundler)
+* **[erc-4337 is on mainnet](https://twitter.com/erc4337/status/1631087958949531648)**
+* **[account abstraction, by safe](https://safe.mirror.xyz/9KmZjEbFkmI79s28d9xar6JWYrE50F5AHpa5CR12YGI)**
+* **[erc-4337 contract deployment](https://etherscan.io/address/0x0576a174D229E3cFA37253523E645A78A0C91B57#code)**
+* **[unpacking erc-4337, by a. chiplunkar](https://frontier.tech/unpacking-erc-4337)**
+* **[account abstraction series, by alchemy](https://www.alchemy.com/blog/account-abstraction)**
+* **[erc-4337 bundler implementation in rust](https://github.com/Vid201/aa-bundler)**
+* **[erc-4337: account abstraction using alt mempool](https://eips.ethereum.org/EIPS/eip-4337)**
+* **[account abstraction gas benchmakrs, by eth-infinitism](https://github.com/eth-infinitism/account-abstraction/blob/develop/reports/gas-checker.txt)**
+
 
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-###### protocols
+###### protocols that don't use erc-4337
 
 <br>