add mainnet fund and install

Author: significance

docs/installation/fund-your-node.md

@@ -3,7 +3,17 @@ title: Fund Your Node
 id: fund-your-node
 ---
 
-Your Bee node needs BZZ to be able to properly interact with the network. In order to receive these, you will need to sign into our Discord and request your BZZ test tokens from the [#faucet](https://discord.gg/kfKvmZfVfe) channel, using your node's Ethereum address.
+## Testnet
+
+Your Bee node needs BZZ to be able to properly interact with the network. In order to receive these, you will need to acquire BZZ, then bridge your BZZ to the XDAI chain.
+
+To bridge your XDAI, you may use [omni bridge](https://omni.xdaichain.com/bridge).
+
+To work out what your node's Ethereum address is, please consult your relevant installation guide or check your logs!
+
+## Testnet
+
+Your Bee node needs gBZZ to be able to properly interact with the test network. In order to receive these, you will need to sign into our Discord and request your gBZZ test tokens from the [#faucet](https://discord.gg/kfKvmZfVfe) channel, using your node's Ethereum address.
 
 To work out what your node's Ethereum address is, please consult your relevant installation guide or check your logs!
 

docs/installation/install.md

@@ -231,6 +231,14 @@ Because Bee has many use cases and may run on many different specifications of h
 
 Bee is a versatile piece of software with diverse use cases. When you start Bee for the first time, please consider changing the following configuration parameters. Read on for more info on how to change the configuration of your software and restart your Bee service.
 
+#### Mainnet Node or Testnet Node
+
+To connect to mainnet, set your `mainnet` flag to `true`.
+
+```yaml
+mainnet: true
+```
+
 #### Full Node or Light Node
 
 Since Bee can take a lot of resources when providing services to the network in exchange for BZZ, a Bee node starts off in Light Node mode by default. To allow your Bee to use your network bandwidth and computing resources to serve the network and start [cashing out](/docs/working-with-bee/cashing-out) cheques, set the `--full-node` flag to `true`.