Make overview.rst show only the most important things #52

Add some informational text also.

Author: greenrobot

doc/index.rst

@@ -8,7 +8,7 @@ ObjectBox Python API
    overview
    API Reference <autoapi/objectbox/index>
    ObjectBox Homepage <https://objectbox.io>
-   ObjectBox docs <https://docs.objectbox.io>
+   ObjectBox Docs <https://docs.objectbox.io>
    GitHub <https://github.com/objectbox/objectbox-python>
 
 

doc/overview.rst

@@ -1,82 +1,56 @@
 API Overview
 ============
+
+This gives an overview of the ObjectBox Python API by showing most important parts to get started.
+
+For beginners, we recommend our `Python database docs <https://docs.objectbox.io/>`_ at for more details;
+especially the `Getting Started <https://docs.objectbox.io/getting-started>`_ guide.
+This covers more than just the obligatory ``pip install --upgrade objectbox``.
 
     .. currentmodule:: objectbox
 
-Entity Decorator
-----------------
+Defining the Data Model
+-----------------------
+
+The ``@Entity`` decorator is used to define a class as an ObjectBox entity.
 
   .. autosummary:: 
         :nosignatures:
 
         Entity
 
-
-Property Types
---------------
+Each entity class defines a set of properties. The following property types are most commonly used:
 
   .. autosummary:: 
         :nosignatures:
 
         Id
-        Bool
         String
-        Bytes
-        Int8
-        Int16
         Int32
         Int64
         Float32
         Float64
         Date
-        DateNano
-        Flex
-        BoolVector
-        CharVector
-        Int8Vector
-        Int16Vector
-        Int32Vector
-        Int64Vector
         Float32Vector
-        Float64Vector
-        BoolList
-        CharList
-        Int8List
-        Int16List
-        Int32List
-        Int64List
-        Float32List
-        Float64List
 
-
-Index Types and Flags
----------------------
-        
-  .. autosummary:: 
-        :nosignatures:
-        
-        Index
-        HnswIndex
-        HnswFlags
-        VectorDistanceType
+Note: ``Float32Vector`` is used for `on-device vector search <https://docs.objectbox.io/on-device-vector-search>`_.
 
 Classes
 -------
 
+Now, with the data model defined, you can start using the ObjectBox database.
+These are the main classes to interact with:
+
     .. autosummary::
         :nosignatures:
 
         Store
         Box
-        Model
-        PropertyQueryCondition
-
+        QueryBuilder
+        Query
 
-Deprecated Interfaces
----------------------
+What's next
+-----------
 
-    .. autosummary::
-        :nosignatures:
-        
-        ObjectBox
-        Builder
+* `Python database docs (docs.objectbox.io) <https://docs.objectbox.io/>`_
+* API reference (next in this API documentation)