docs: update getting started page with link to book and installation instructions

Author: cadenmyers13

doc/source/getting-started.rst

@@ -8,4 +8,31 @@
 Getting started
 ================
 
-Coming soon...
+.. image:: ./img/pdfprimer.png
+    :alt: codecov-in-pr-comment
+    :width: 150px
+    :align: right
+
+For detailed instructions and in-depth examples of modeling with ``diffpy.cmi``, we highly recommend the book,
+
+*Atomic Pair Distribution Function Analysis: A Primer* by Simon J. L. Billinge and Kirsten M. Ø. Jensen (Oxford University Press, 2023).
+
+To purchase this book, please visit `this link <https://www.amazon.com/Atomic-Pair-Distribution-Function-Analysis/dp/0198885806>`_.
+
+Installation
+------------
+
+To install ``diffpy.cmi``, create a new conda environment and install the package from the conda-forge channel.
+
+.. code-block:: console
+
+    conda create -n diffpy.cmi-env
+    conda install -c conda-forge diffpy.cmi
+    conda activate diffpy.cmi-env
+
+
+Data and Examples
+-----------------
+
+Worked examples and experimental data from the book are freely available at our
+`GitHub repository <https://github.com/Billingegroup/pdfttp_data>`_.