diff --git a/README.md b/README.md
index 20763d4..84f0bd8 100644
--- a/README.md
+++ b/README.md
@@ -1336,6 +1336,31 @@ Traceback (most recent call last):
 KeyboardInterrupt
 ```
 
+### Common Built-in Exceptions
+```python
+BaseException
+ +-- SystemExit                   # Raised by the sys.exit() function.
+ +-- KeyboardInterrupt            # Raised when the user hits the interrupt key.
+ +-- Exception                    # User-defined exceptions should be derived from this class.
+      +-- StopIteration           # Raised by next() when run on an empty iterator.
+      +-- ArithmeticError         # Base class for arithmetic errors.
+      |    +-- ZeroDivisionError  # Raised when dividing by zero.
+      +-- AttributeError          # Raised when an attribute is missing.
+      +-- EOFError                # Raised by input() when it hits end-of-file condition.
+      +-- LookupError             # Raised when a look-up on sequence or dict fails.
+      |    +-- IndexError         # Raised when a sequence index is out of range.
+      |    +-- KeyError           # Raised when a dictionary key is not found.
+      +-- NameError               # Raised when a variable name is not found.
+      +-- OSError                 # Failures such as “file not found” or “disk full”.
+      |    +-- FileNotFoundError  # When a file or directory is requested but doesn't exist.
+      +-- RuntimeError            # Raised by errors that don't fall in other categories.
+      |    +-- RecursionError     # Raised when the the maximum recursion depth is exceeded.
+      +-- TypeError               # Raised when an argument is of wrong type.
+      +-- ValueError              # When an argument is of right type but inappropriate value.
+           +-- UnicodeError       # Raised when encoding/decoding strings from/to bytes fails. 
+```
+* **Appropriate built-in exceptions to be risen by the user are: 'ValueError', 'TypeError' and 'RuntimeError'.**
+
 
 Print
 -----
diff --git a/index.html b/index.html
index 6f52b4b..e260b27 100644
--- a/index.html
+++ b/index.html
@@ -1229,6 +1229,31 @@ Traceback (most recent call last):
   File <span class="hljs-string">"&lt;stdin&gt;"</span>, line <span class="hljs-number">2</span>, <span class="hljs-keyword">in</span> &lt;module&gt;
 KeyboardInterrupt
 </code></pre>
+<h3 id="commonbuiltinexceptions">Common Built-in Exceptions</h3>
+<pre><code class="python language-python hljs">BaseException
+ +-- SystemExit                   <span class="hljs-comment"># Raised by the sys.exit() function.</span>
+ +-- KeyboardInterrupt            <span class="hljs-comment"># Raised when the user hits the interrupt key.</span>
+ +-- Exception                    <span class="hljs-comment"># User-defined exceptions should be derived from this class.</span>
+      +-- StopIteration           <span class="hljs-comment"># Raised by next() when run on an empty iterator.</span>
+      +-- ArithmeticError         <span class="hljs-comment"># Base class for arithmetic errors.</span>
+      |    +-- ZeroDivisionError  <span class="hljs-comment"># Raised when dividing by zero.</span>
+      +-- AttributeError          <span class="hljs-comment"># Raised when an attribute is missing.</span>
+      +-- EOFError                <span class="hljs-comment"># Raised by input() when it hits end-of-file condition.</span>
+      +-- LookupError             <span class="hljs-comment"># Raised when a look-up on sequence or dict fails.</span>
+      |    +-- IndexError         <span class="hljs-comment"># Raised when a sequence index is out of range.</span>
+      |    +-- KeyError           <span class="hljs-comment"># Raised when a dictionary key is not found.</span>
+      +-- NameError               <span class="hljs-comment"># Raised when a variable name is not found.</span>
+      +-- OSError                 <span class="hljs-comment"># Failures such as “file not found” or “disk full”.</span>
+      |    +-- FileNotFoundError  <span class="hljs-comment"># When a file or directory is requested but doesn't exist.</span>
+      +-- RuntimeError            <span class="hljs-comment"># Raised by errors that don't fall in other categories.</span>
+      |    +-- RecursionError     <span class="hljs-comment"># Raised when the the maximum recursion depth is exceeded.</span>
+      +-- TypeError               <span class="hljs-comment"># Raised when an argument is of wrong type.</span>
+      +-- ValueError              <span class="hljs-comment"># When an argument is of right type but inappropriate value.</span>
+           +-- UnicodeError       <span class="hljs-comment"># Raised when encoding/decoding strings from/to bytes fails. </span>
+</code></pre>
+<ul>
+<li><strong>Appropriate built-in exceptions to be risen by the user are: 'ValueError', 'TypeError' and 'RuntimeError'.</strong></li>
+</ul>
 <h2 id="print"><a href="#print" name="print">#</a>Print</h2>
 <pre><code class="python language-python hljs">print(&lt;el_1&gt;, ..., sep=<span class="hljs-string">' '</span>, end=<span class="hljs-string">'\n'</span>, file=sys.stdout, flush=<span class="hljs-keyword">False</span>)
 </code></pre>