docs: add networks and environments guide

docs/guides/acquire-tokens.mdx

@@ -15,7 +15,7 @@ transaction. However, a supply of free tDUST is
 available for developers who want to experiment with Midnight DApps.
 
 :::tip
-If you are using the local undeployed network, then use the [local network faucet](./midnight-local-network#fund-wallets) to fund your wallet and generate tDUST.
+If you are using the local undeployed network, then use the [local network funding menu](./networks-and-environments#running-a-local-network) to fund your wallet and generate tDUST.
 :::
 
 ## Get tNIGHT

docs/guides/configure-providers.mdx

@@ -55,7 +55,7 @@ export type MyProviders = MidnightProviders<MyCircuitKeys, PrivateStateId, MyPri
 
 ## Set the network ID
 
-Call `setNetworkId` before initializing any providers. All Midnight.js packages read this value to target the correct network.
+Call `setNetworkId` before initializing any providers. Midnight.js reads this value when it normalizes addresses and builds transactions, so it must be set before any contract operation.
 
 ```typescript
 import { setNetworkId } from '@midnight-ntwrk/midnight-js-network-id';
@@ -140,7 +140,7 @@ const publicDataProvider = indexerPublicDataProvider(
 :::info Local development
 
 Midnight provides a local network for development and testing purposes. Use the local network to test your contract and providers before deploying to the main network. 
-For more information, see the [Midnight local network](./midnight-local-network) guide.
+For more information, see [Running a local network](./networks-and-environments#running-a-local-network).
 
 :::