diff --git a/.gitignore b/.gitignore
index 47c8895..bc94af1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 __pycache__/
 */__pycache__/
 /exploration/*.ipynb
+/config/*.ipynb
diff --git a/config/ORMtutorial.py b/config/ORMtutorial.py
new file mode 100644
index 0000000..66274d9
--- /dev/null
+++ b/config/ORMtutorial.py
@@ -0,0 +1,113 @@
+# ---
+# jupyter:
+#   jupytext:
+#     text_representation:
+#       extension: .py
+#       format_name: percent
+#       format_version: '1.3'
+#       jupytext_version: 1.11.2
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+# %%
+import sqlalchemy
+print(sqlalchemy.__version__)
+
+# %%
+from sqlalchemy import create_engine
+engine = create_engine('sqlite:///:memory:', echo=True)
+
+# %%
+from sqlalchemy.ext.declarative import declarative_base
+Base = declarative_base()
+
+# %%
+from sqlalchemy import Column, Integer, String
+class User(Base):
+    __tablename__ = 'users'
+
+    id = Column(Integer, primary_key=True)
+    name = Column(String)
+    fullname = Column(String)
+    nickname = Column(String)
+
+    def __repr__(self):
+        return "<User(name='%s', fullname='%s', nickname='%s')>" % (
+            self.name, self.fullname, self.nickname)
+
+
+# %%
+print(User.__table__)
+
+# %%
+Base.metadata.create_all(engine)
+
+# %%
+ed_user = User(name='ed', fullname='Ed Jones', nickname='edsnickname')
+print(ed_user.name)
+print(ed_user.nickname)
+print(str(ed_user.id))
+
+# %%
+from sqlalchemy.orm import sessionmaker
+Session = sessionmaker(bind=engine)
+session = Session()
+
+# %% [markdown]
+# # Adding and Updating Objects
+
+# %%
+ed_user = User(name='ed', fullname='Ed Jones', nickname='edsnickname')
+session.add(ed_user)
+
+# %%
+our_user = session.query(User).filter_by(name='ed').first() 
+print(our_user)
+
+# %%
+print(ed_user is our_user)
+
+# %%
+session.add_all([
+    User(name='wendy', fullname='Wendy Williams', nickname='windy'),
+    User(name='mary', fullname='Mary Contrary', nickname='mary'),
+    User(name='fred', fullname='Fred Flintstone', nickname='freddy')])
+
+# %%
+ed_user.nickname = 'eddie'
+
+# %%
+print(session.dirty)
+
+# %%
+print(session.new)
+
+# %%
+session.commit()
+
+# %%
+print(ed_user.id)
+
+# %% [markdown]
+# # Rolling back
+
+# %%
+ed_user.name = 'Edwardo'
+
+# %%
+fake_user = User(name='fakeuser', fullname='Invalid', nickname='12345')
+session.add(fake_user)
+
+# %%
+session.query(User).filter(User.name.in_(['Edwardo', 'fakeuser'])).all()
+
+# %%
+session.rollback()
+print(ed_user.name)
+print(fake_user in session)
+
+# %%
+session.query(User).filter(User.name.in_(['ed', 'fakeuser'])).all()
diff --git a/exploration/expl_screen.py b/exploration/expl_screen.py
index eb6937c..a0d8b7e 100644
--- a/exploration/expl_screen.py
+++ b/exploration/expl_screen.py
@@ -48,7 +48,7 @@ screen_freq = df_screen_inactive.value_counts("screen_status")
 tabulate(screen_freq.to_frame(), tablefmt="html")
 
 # %%
-screen_status
+print(screen_status)
 
 # %% [markdown]
 # A typical sequence might be: off -> locked -> on -> unlocked (0 -> 2 -> 1 -> 3)