Added image!

README.md

@@ -1,3 +1,7 @@
+<p align="center">
+    <img src="doc/assets/icon.png" alt="icon" width="200"/>
+</p>
+
 coincoincoin - an exploration of the ethereum blockchain and smart contracts
 
 - [Introduction](#introduction)

doc/01_environment.md

@@ -1,6 +1,7 @@
 - [Prerequisites](#prerequisites)
 - [Installation](#installation)
 - [Getting a test Ethereum wallet](#getting-a-test-ethereum-wallet)
+- [Getting free money 😎](#getting-free-money-)
 - [Writing the contract](#writing-the-contract)
 
 
@@ -29,9 +30,12 @@ It's a development environment to compile, deploy, test, and debug your Ethereum
 3. Go to Advanced settings, click "Show Test Networks"
 4. Click this button and select "Sepolia" from the dropdown (should be at the bottom)
 
-
 ![the button](assets/instruction_test.png)
 
+## Getting free money 😎
+
+The [google faucet](https://cloud.google.com/application/web3/faucet/ethereum/sepolia) is the easiest way to go. Unfortunately you only get 0.05 Sepolia ETH which is not enough to deploy a contract. You can also "mine" it [here](https://sepolia-faucet.pk910.de), but you need to go through a verification process.
+
 ## Writing the contract
 
 Create a new file in the `contracts` directory called `CoinCoinCoin.sol` (or whatever) and paste the following code: