flesh out install steps and other clean up on driver the browser robo…

…t NB

content/web_scraping/drive_the_browser_robot.ipynb

@@ -55,22 +55,34 @@
    "source": [
     "## Setting up the Environment\n",
     "\n",
-    "Install `playwright` using `pip` or `pipenv`.\n",
+    "If you haven't already done so, clone the [data-journalism-notebooks GitHub repository](https://github.com/stanfordjournalism/data-journalism-notebooks), either using VS Code or the command line:\n",
+    "\n",
+    "```bash\n",
+    "# Here's how to use plain old git to clone on the command line\n",
+    "git clone [email protected]:stanfordjournalism/data-journalism-notebooks.git\n",
+    "```\n",
+    "\n",
+    "You can install `playwright` using `pip` or `pipenv`. We've included `playwright` in the `Pipfile` for this repo, so plain-old `pipenv install` should have you covered.\n",
     "\n",
     "```bash\n",
     "# On the command line, navigate to the code repo,\n",
     "# replacing \"path/to\" with a real path on your machine.\n",
     "cd path/to/data-journalism-notebooks\n",
-    "pipenv install playwright\n",
+    "pipenv install # will include playwright and some other goodies\n",
     "```\n",
     "\n",
-    "Make sure you have the Google Chromium installed on your machine, though note you can also use Firefox and other browsers with `playwright`.\n",
+    "Make sure you have the Google Chromium browser installed on your machine, though note you can also use Firefox and other browsers with `playwright`.\n",
     "\n",
     "`playwright` requires browser drivers to interact with web browsers installed on your machine.\n",
     "\n",
     "Run the following command to install the browser drivers:\n",
     "        \n",
     "```bash\n",
+    "# On the command line, navigate to our repo\n",
+    "cd path/to/data-journalism-notebooks\n",
+    "# Activate the virtual environment (where playwright was installed)\n",
+    "pipenv shell\n",
+    "# Install the drivers\n",
     "playwright install\n",
     "```\n",
     "\n",
@@ -116,9 +128,9 @@
     "\n",
     "Because we're working in Jupyter Lab, which has its own [\"event loop\"](https://medium.com/@dpzhcmy/running-asynchronous-code-in-jupyter-notebooks-managing-event-loops-b9696a596ce4), we have to use Playwright in so-called `async` mode.\n",
     "\n",
-    "In practical terms, that means you have to prepend the `await` keyword on all invocations of `playwright`. \n",
+    "In practical terms, that means you have to prepend the `await` keyword on most invocations of `playwright` classes, methods, etc.\n",
     "\n",
-    "> *See [Async IO in Python: A Complete Walkthrough](https://realpython.com/async-io-python/) for background.*"
+    "> *See [Hidden Life of Objects](../classes_and_oop/hidden_life_of_objects.ipynb) if you're unfamiliar with terms such as classes and methods. Check out [Async IO in Python: A Complete Walkthrough](https://realpython.com/async-io-python/) for background on asynchronous Python.*"
    ]
   },
   {