DOC: Add cross-links from API reference to user guides for indexing and windowing

Author: chaitanyakumar-d

doc/source/reference/indexing.rst

@@ -6,9 +6,11 @@
 Index objects
 =============
 
+.. note::
+
+   Looking for a beginner-friendly introduction? See the :doc:`../user_guide/indexing` user guide for indexing and selecting data.
 Index
 -----
-.. currentmodule:: pandas
 
 **Many of these methods or variants thereof are available on the objects
 that contain an index (Series/DataFrame) and those should most likely be

doc/source/reference/window.rst

@@ -8,6 +8,9 @@ Window
 
 :class:`pandas.api.typing.Rolling` instances are returned by ``.rolling`` calls:
 :func:`pandas.DataFrame.rolling` and :func:`pandas.Series.rolling`.
+.. note::
+
+   Looking for a beginner-friendly introduction? See the :doc:`../user_guide/window` user guide for windowing operations.
 :class:`pandas.api.typing.Expanding` instances are returned by ``.expanding`` calls:
 :func:`pandas.DataFrame.expanding` and :func:`pandas.Series.expanding`.
 :class:`pandas.api.typing.ExponentialMovingWindow` instances are returned by ``.ewm``