add getting started instructions to README

README.md

@@ -1,4 +1,19 @@
-# python-class-examples
+# Python Class Examples
 Various Python data analysis examples used in my courses. All of these Jupyter Notebooks have been tested in [Google Colab](http://colab.research.google.com) with a T4 GPU (although the TitanicSurvival examples [including MLJAR] do not require a GPU runtime).
 
 For help with learning Python, see my [python-bootcamp](https://github.com/davedgd/python-bootcamp).
+
+# Getting Started (with Google Colab)
+- In the Google Colab menu, go to File -> Open notebook
+- In the dialogue that appears, click the GitHub tab
+- Enter this repo as your GitHub URL, i.e., https://github.com/davedgd/python-class-examples
+- Click the search icon (or hit enter)
+- Select the notebook you want to open to get started (e.g., AudioCraft.ipynb)
+- **Note:** For most examples, you will also need to change the runtime type to one with a GPU...
+    - In the Google Colab menu, go to Runtime -> Change runtime type
+    - Under 'Hardware accelator' choose at least a 'T4 GPU' (or better)
+    - Click the Save button
+- To run the notebook, in the Google Colab menu, go to Runtime -> Run all
+- If you see a 'Warning: This notebook was not authored by Google' popup, click the 'Run anyway' button
+- Wait patiently, as it make take a few minutes to install the packages and run the notebook
+- **Note:** You may see occasional error messages, particularly when installing/loading pip packages -- you can generally safely ignore these (as long as the notebook runs)