Update docs/tutorials/google/start.pynb (#6346)

* Update docs/tutorials/google/start.pynb

* address comments

Author: senecameeks

Diff for: docs/tutorials/google/start.ipynb

@@ -346,6 +346,62 @@
         "print(hw_circuit)"
       ]
     },
+    {
+      "cell_type": "markdown",
+      "source": [
+        "Among these best practices, we will highlight two important ones.\n",
+        "\n",
+        "First, if your circuit uses more than one qubit, you can map the circuit onto the grid of the quantum processor in a way that accounts for its topology. You can do this as follows:"
+      ],
+      "metadata": {
+        "id": "e-tOIGJD9c9_"
+      }
+    },
+    {
+      "cell_type": "code",
+      "source": [
+        "device_graph = device.metadata.nx_graph\n",
+        "router = cirq.RouteCQC(device_graph)\n",
+        "hw_circuit = router(circuit)\n",
+        "print(hw_circuit)"
+      ],
+      "metadata": {
+        "id": "LQh5D_Mx9hvk"
+      },
+      "execution_count": null,
+      "outputs": []
+    },
+    {
+      "cell_type": "markdown",
+      "source": [
+        "Second, if your quantum processor is calibrated to do a specific set of gates, you will need to transform your circuit into that gateset. For example, for a CZ gateset, you can do the following."
+      ],
+      "metadata": {
+        "id": "3An1Uo6F9vxS"
+      }
+    },
+    {
+      "cell_type": "code",
+      "source": [
+        "gateset = cirq.CZTargetGateset(allow_partial_czs=True)\n",
+        "transformed_circuit = cirq.optimize_for_target_gateset(hw_circuit, gateset=gateset)\n",
+        "print(transformed_circuit)"
+      ],
+      "metadata": {
+        "id": "muJ-dprf9_HC"
+      },
+      "execution_count": null,
+      "outputs": []
+    },
+    {
+      "cell_type": "markdown",
+      "source": [
+        "Other gatesets and considerations are included in the [best practices guide](https://quantumai.google/cirq/google/best_practices)."
+      ],
+      "metadata": {
+        "id": "hmIT53Yv5RR1"
+      }
+    },
     {
       "cell_type": "markdown",
       "metadata": {
@@ -506,20 +562,7 @@
   ],
   "metadata": {
     "colab": {
-      "provenance": [
-        {
-          "file_id": "1LRMd6swNPz1MTIH5h4h0q4Myy_1OrX_z",
-          "timestamp": 1698983271770
-        },
-        {
-          "file_id": "1uhNB-LrdQP0sGhN8IduD-gIGqVDpEPPx",
-          "timestamp": 1698857208369
-        },
-        {
-          "file_id": "https://github.com/quantumlib/Cirq/blob/master/docs/tutorials/google/start.ipynb",
-          "timestamp": 1698798504321
-        }
-      ]
+      "provenance": []
     },
     "kernelspec": {
       "display_name": "Python 3",
@@ -528,4 +571,4 @@
   },
   "nbformat": 4,
   "nbformat_minor": 0
-}
+}