More comments, notes and improvements

week2/day1.ipynb

@@ -23,6 +23,8 @@
     "\n",
     "If you haven't done so already, you'll need to create API keys from OpenAI, Anthropic and Google.\n",
     "\n",
+    "**Please note:** if you'd prefer to avoid extra API costs, feel free to skip setting up Anthopic and Google! You can see me do it, and focus on OpenAI for the course.\n",
+    "\n",
     "For OpenAI, visit https://openai.com/api/  \n",
     "For Anthropic, visit https://console.anthropic.com/  \n",
     "For Google, visit https://ai.google.dev/gemini-api  \n",
@@ -37,7 +39,9 @@
     "GOOGLE_API_KEY=xxxx\n",
     "```\n",
     "\n",
-    "OR enter the keys directly in the cells below."
+    "OR enter the keys directly in the cells below.\n",
+    "\n",
+    "You may need to restart the Jupyter Notebook Kernel (the Python process) via the Kernel menu."
    ]
   },
   {
@@ -259,8 +263,8 @@
     "# To be serious! GPT-4o-mini with the original question\n",
     "\n",
     "prompts = [\n",
-    "    {\"role\": \"system\", \"content\": \"You are a helpful assistant\"},\n",
-    "    {\"role\": \"user\", \"content\": \"How do I decide if a business problem is suitable for an LLM solution?\"}\n",
+    "    {\"role\": \"system\", \"content\": \"You are a helpful assistant that responds in Markdown\"},\n",
+    "    {\"role\": \"user\", \"content\": \"How do I decide if a business problem is suitable for an LLM solution? Please respond in Markdown.\"}\n",
     "  ]"
    ]
   },