Add link to more detailed tutorial

Author: jerry-git

notebooks/beginner/conditionals.ipynb

@@ -260,6 +260,13 @@
     "    \n",
     "print(greeting)"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "For more detailed overview about conditionals, check this [tutorial from Real Python](https://realpython.com/python-conditional-statements/)."
+   ]
   }
  ],
  "metadata": {
@@ -271,7 +278,7 @@
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 3.0
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
@@ -282,5 +289,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 0
-}
+ "nbformat_minor": 1
+}

notebooks/beginner/html/conditionals.html

@@ -11777,7 +11777,7 @@
   }
 
   $( document ).ready(function(){
-    show=false;
+show=false;
     $('div.output').hide()
   });
 </script>
@@ -12377,6 +12377,15 @@ <h2 id="if-elif-else"><code>if-elif-else</code><a class="anchor-link" href="#if-
 </div>
 </div>
 
+</div>
+<div class="cell border-box-sizing text_cell rendered"><div class="prompt input_prompt">
+</div>
+<div class="inner_cell">
+<div class="text_cell_render border-box-sizing rendered_html">
+<p>For more detailed overview about conditionals, check this <a href="https://realpython.com/python-conditional-statements/">tutorial from Real Python</a>.</p>
+
+</div>
+</div>
 </div>
     </div>
   </div>