Update README.md

Author: jdkanani

README.md

@@ -3,9 +3,23 @@ FxPortal for Matic chain. No mapping. Seamless.
 
 **Warning:** Code is not audited.
 
+### What is Fx bridge (fx-portal)?
+
+It's Meta bridge. This bridge allows any type of state sync without mapping.
+
+**What about PoS portal?**
+
+PoS Portal is another bridge but it works only for few ERC standards and requires mappings. It is more developer friendly, allows customization without much headache. 
+
+While Fx-portal focuses on permissionless-ness and flexibility. A deverloper might have to write more code but more customizatable than PoS Portal. Requires no mapping.
+
+**Can I built my own bridge?**
+
+Yes. You can check docs here: https://docs.matic.network/docs/develop/l1-l2-communication/ethereum-to-matic and https://docs.matic.network/docs/develop/l1-l2-communication/matic-to-ethereum 
+
 ### What is FxChild and FxRoot?
 
-`FxChild` and `FxRoot` are main contracts on which mapping-less bridge works. It calls and passes data to user-defined methods on another chain without mapping.
+`FxChild` (FxChild.sol)  and `FxRoot` (FxRoot.sol) are main contracts on which mapping-less bridge works. It calls and passes data to user-defined methods on another chain without mapping.
 
 **Mumbai**
 
@@ -23,17 +37,7 @@ FxPortal for Matic chain. No mapping. Seamless.
 | [FxChild (Matic Mainnnet)](https://explorer-mainnet.maticvigil.com/address/0x8397259c983751DAf40400790063935a11afa28a/contracts) | `0x8397259c983751DAf40400790063935a11afa28a`|
 
 
-### How Matic state transfer works?
-
-### Why they are many bridges?
-
-### Can I built my own bridge?
-
-### What is Fx bridge (fx-portal)?
-
-Meta bridge :) 
-
-Bridge which allows any type of state sync without mapping.
+You can deploy your own `FxChild` and `FxRoot`. But no need, except you just want to have some fun and extra ETH to throw away.
 
 ### What can I build with it?