Update README.md

README.md

@@ -27,7 +27,42 @@ You'll have to run your own node using the following parameters:
 geth --rpc --rpcapi 'web3,eth,debug' --rpcport 8545 --rpccorsdomain '*'
 geth will run the rpc server on http://localhost:8545, remix uses this url by default to connect to web3.
 
+REMIX First Step:
 
+Once remix is connected to a node, you will be able to debug transactions.
+There's two way of doing that:
+ - using a block number and a transaction index.
+ - using a transaction hash.
 
+When loading the transaction succeed, the hash, from and to field will show up. 
+Then the vm trace is loaded.
 
+The debugger itself contains several controls that allow stepping over the trace and seing the current state of a selected step.
 
+ - Slider and Stepping action:
+
+The slider allows to move quickly from a state to another.
+Stepping actions are:
+- Step Into Back
+- Step Over Back
+- Step Over Forward
+- Step Into Forward
+- Jump Next Call (this will select the next state that refers to a context changes - CALL, CALLCODE, DELEGATECALL, CREATE)
+
+ - State Viewer:
+ 
+The upper right panel contains basic informations about the current step:
+- VMTraceStep: the index in the trace of the current step.
+- Step
+- Add memory
+- Gas: gas used by this step
+- Remaining gas: gas left
+- Loaded address: the current code loaded, refers to the executing code.
+
+The other 6 panels describe the current selected state:
+ - Instructions list: list of all the instruction that defines the current executing code.
+ - Stack
+ - Storage Changes
+ - Memory
+ - Call Data
+ - Call Stack