Update README.

azure-quantum/examples/resource_estimation/README.md

@@ -1,12 +1,23 @@
 # Resource estimator examples
 
 This directory contains several standalone Python scripts that use the Azure
-Quantum Resource Estimator through the `azure_quantum` Python API.
+Quantum Resource Estimator through the `azure-quantum` Python API.
 
-## Example scripts
+## Prerequisites
+
+These scripts require access to an Azure Quantum workspace.  Read [our
+documentation](https://learn.microsoft.com/azure/quantum/how-to-create-workspace?tabs=payg%2Ctabid-quick)
+to learn how to set up an Azure Quantum workspace.  Once the Azure Quantum
+workspace is created, you can retrieve the _resource id_ and _location_ from
+the _Overview_ page of your workspace.
+
+Also, you need to install the `azure-quantum` Python package:
 
-Some of the scripts require a resource id and a location, which can be obtained
-from the _Overview_ page of your _Azure Quantum workspace_.
+```shell
+python -m pip install azure-quantum
+```
+
+## Example scripts
 
 * **[cli.py](https://github.com/microsoft/qdk-python/blob/main/azure-quantum/examples/resource_estimation/cli.py): A resource estimation CLI that can execute resource
   estimation jobs from various input formats and generate JSON output.**