Update 07. Loops.ipynb

Author: APMonitor

07. Loops.ipynb

@@ -10,6 +10,8 @@
     "\n",
     "There are two basic types of loops including `for` and `while`. An example of a loop is to check the temperature of the egg every second and adjust the heater.\n",
     "\n",
+    "[Python Playlist on YouTube](https://www.youtube.com/watch?v=qR0njzQvvOA&list=PLLBUgWXdTBDi3J05aMVG1knUpqRhkbc46)",
+    "\n",
     "[![Loops](https://apmonitor.com/che263/uploads/Begin_Python/BeginPython07.png)](https://www.youtube.com/watch?v=qR0njzQvvOA&list=PLLBUgWXdTBDi3J05aMVG1knUpqRhkbc46 \"Loops\")\n",
     "\n",
     "### While Loops\n",