readme: Give more guidance about how to run successfully

Author: Lewis

README.md

@@ -134,15 +134,24 @@ cd program
 pnpm install
 anchor build
 anchor keys sync
+anchor build
+anchor deploy
 ```
 
+If `Operation timed out` happens during `anchor deploy`, you can also use other RPC endpoint such as `anchor deploy --provider.cluster https://solana-devnet.g.alchemy.com/v2/YOUR-API-KEY`
+
 3. Install frontend dependencies:
 
 ```bash
 cd frontend
 pnpm install
+cp ../program/target/deploy/counter-keypair.json frontend/anchor-idl/idl.json
+cp ../program/target/types/counter.ts frontend/anchor-idl/idl.ts
+pnpm dev
 ```
 
+Action `cp` is important, so that you won't access the program others may have deployed. You'll notice that if your initial counter value is not null or zero.
+
 ### Development
 
 1. Test the program:

program/Anchor.toml

@@ -5,7 +5,7 @@ package_manager = "pnpm"
 resolution = true
 skip-lint = false
 
-[programs.localnet]
+[programs.devnet]
 counter = "8PY1q5J3Aq2z7TBDLBrVjv77mYzjXSCz6iHQaFEFw9hY"
 
 [registry]