diff --git a/Readme.rst b/Readme.rst
index 50a98b1..228c3b6 100644
--- a/Readme.rst
+++ b/Readme.rst
@@ -19,9 +19,65 @@ Run::
 
     make install
 
-Copy the ``vendor/composer/autoload_classaliasmap.php`` generated by ``composer`` in your TYPO3 installation to ``LegacyClassnames.php`` in the root of this project.
+and copy the ``vendor/composer/autoload_classaliasmap.php`` generated by ``composer`` in your TYPO3
+installation to ``LegacyClassnames.php`` in the root of this project.
 
 Usage
 =====
 
-Will follow.
+Run::
+
+    ./vendor/bin/phpcbf <path>
+
+This will run the auto fixer recursive for ``<path>`` fixing all issues.
+
+Afterwards you should run::
+
+    ./vendor/bin/phpcs <path>
+
+To get information about possible issues that were not autofixed.
+
+What's included?
+================
+
+Currently we can migrate calls to old legacy class names of the TYPO3 core like ``Tx_Extbase...`` to
+new ones like ``\TYPO3\Extbase\...``. This is done for:
+
+- PHPDocuments, like Includes and annotations for IDEs.
+
+- Inheritance like ``extends`` and ``implements``.
+
+- Static calls like ``t3lib_div::`` to ``\TYPO3\Core\Utility\GeneralUtility``.
+
+- Typehints in methods and function like injects.
+
+
+What does it look like?
+=======================
+
+.. code::
+
+   $ ./vendor/bin/phpcs -p --colors -s <path>
+   E
+
+
+   FILE: <path>
+   ----------------------------------------------------------------------
+   FOUND 5 ERRORS AFFECTING 5 LINES
+   ----------------------------------------------------------------------
+    8 | ERROR | [x] Legacy classes are not allowed; found
+      |       |   backend_toolbarItem
+      |       |   (Typo3Update.LegacyClassnames.Inheritance.legacyClassname)
+   14 | ERROR | [x] Legacy classes are not allowed; found TYPO3backend
+      |       |   (Typo3Update.LegacyClassnames.DocComment.legacyClassname)
+   16 | ERROR | [x] Legacy classes are not allowed; found TYPO3backend
+      |       |   (Typo3Update.LegacyClassnames.TypeHint.legacyClassname)
+   48 | ERROR | [x] Legacy classes are not allowed; found t3lib_extMgm
+      |       |   (Typo3Update.LegacyClassnames.StaticCall.legacyClassname)
+   61 | ERROR | [x] Legacy classes are not allowed; found t3lib_div
+      |       |   (Typo3Update.LegacyClassnames.StaticCall.legacyClassname)
+   ----------------------------------------------------------------------
+   PHPCBF CAN FIX THE 5 MARKED SNIFF VIOLATIONS AUTOMATICALLY
+   ----------------------------------------------------------------------
+
+   Time: 35ms; Memory: 5Mb