diff --git a/README.md b/README.md
index 34540e7..fe304df 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Max's Smart Home - MaSH
+# Max' Smart Home - MaSH
 
 Should be a very simple **server** implementation of what is required in Max's smart home. Trying not to overcomplicate things and thereby ruin motivation to work on this.
 
diff --git a/example.conf.yaml b/example.conf.yaml
index c5f5413..4ea3dbb 100644
--- a/example.conf.yaml
+++ b/example.conf.yaml
@@ -9,6 +9,11 @@ features:
 home:
   latitude: 52.51860
   longitude: 13.37565
+  
+  beds:
+    - id: max-bed
+      name: Bettwaage
+      room: *max
 
   rooms:
     - id : &hw hallway
diff --git a/src/example.py b/src/example.py
index 3eca4eb..c4849c2 100644
--- a/src/example.py
+++ b/src/example.py
@@ -33,19 +33,54 @@ class Automation:
 
     def trigger(self):
         def decorator(func):
-            return func
 
+            return func
         return decorator
 
 
 class PeopleCountEngineV1(Automation):
     @Automation.trigger(
-        devices=["matrixclock"], rule=lambda h: h.device("matrixclock").contrast == 6
+        devices=["matrixclock"],
+        rule=lambda h: h.device("matrixclock").contrast == 6
     )
     def turn_light_on_sometimes(self, home: Home):
         home.room("max").lights().on = True
 
 
+
+
+
+
+
+
+    @Automation.trigger(
+        people=["max"],
+        rule=lambda h: h.person("max").athome()
+    )
+    def turn_light_on_sometimes(self, home: Home):
+        home.room("max").lights().on = h.person("max").athome()
+
+
+
+
+
+@Automation.state(h.room("Max").lights())
+def max_room_light():
+    if max.ishome():
+        return "off"
+    
+    scene = "Daylight scene"
+    
+    if nighttime:
+        scene = "nighttime"
+        
+    if max.working:
+        scene.dim(0.5)
+    
+    return scene
+
+
+
 from mash.mash import MaSH
 
 mash = MaSH()
diff --git a/src/mash/entities/entity.py b/src/mash/entities/entity.py
new file mode 100644
index 0000000..317980b
--- /dev/null
+++ b/src/mash/entities/entity.py
@@ -0,0 +1,32 @@
+class Entity:
+    def __init__(
+        self, *, id: str, name: str, room: str, device_type: str, groups: list[str] = []
+    ) -> None:
+        self._id = id
+        self._name = name
+        self._room = room
+        self._device_type = device_type
+        self._groups = set(groups)
+
+    @property
+    def id(self) -> str:
+        return self._id
+
+    @property
+    def name(self) -> str:
+        return self._name
+
+    @property
+    def room(self) -> str:
+        return self._room
+
+    @property
+    def device_type(self) -> str:
+        return self._device_type
+
+    @property
+    def groups(self) -> set[str]:
+        return self._groups
+
+    def __str__(self) -> str:
+        return f"{self.name} [{self.id}, type {self.device_type}, room {self.room}, in {len(self.groups)} groups]"
diff --git a/src/mash/entities/group.py b/src/mash/entities/group.py
new file mode 100644
index 0000000..04b818c
--- /dev/null
+++ b/src/mash/entities/group.py
@@ -0,0 +1,66 @@
+from mash.entities.entity import Entity
+from fnmatch import fnmatch
+
+
+class Group:
+    def __init__(self, *, entities: list[Entity] = []) -> None:
+        self.entities: list[Entity] = entities
+
+    def __len__(self):
+        return len(self.entities)
+
+    def __getitem__(self, id: str) -> "Group":
+        if type(id) is int:
+            raise "Numerical index not supported."
+
+        return self.id(id)
+
+    def __get_entities_with_specific_property__(
+        entities: list[Entity],
+        property_getter: callable[[Entity], str],
+        target_pattern: str,
+    ) -> list[Entity]:
+        """Returns all entities for which the property getter matches the desired pattern.
+
+        Args:
+            entities (list[Entity]): List of entities.
+            property_getter (callable[[Entity], str]): Takes one entity and returns the value of the filtered property.
+            target_pattern (str): Pattern that is matched against.
+
+        Returns:
+            list[Entity]: A new group of entities or an empty group, if no entity property matches the target pattern.
+        """
+        return Group(
+            entities=[
+                e for e in entities if fnmatch(property_getter(e), target_pattern)
+            ]
+        )
+
+    def device_type(self, device_type: str) -> "Group":
+        return Group.__get_entities_with_specific_property__(
+            self.entities, lambda e: e.device_type, device_type
+        )
+
+    def id(self, id: str) -> "Group":
+        return Group.__get_entities_with_specific_property__(
+            self.entities, lambda e: e.id, id
+        )
+
+    def room(self, room: str) -> "Group":
+        return Group.__get_entities_with_specific_property__(
+            self.entities, lambda e: e.room, room
+        )
+
+    def name(self, name: str) -> "Group":
+        return Group.__get_entities_with_specific_property__(
+            self.entities, lambda e: e.name, name
+        )
+
+    def lights(self) -> "Group":
+        return self.device_type("light")
+
+    def beds(self) -> "Group":
+        return self.device_type("bed")
+
+    def max(self) -> "Group":
+        return self.room("max")
diff --git a/src/mash/home.py b/src/mash/home.py
new file mode 100644
index 0000000..a3778b5
--- /dev/null
+++ b/src/mash/home.py
@@ -0,0 +1,7 @@
+from mash.entities.entity import Entity
+from mash.entities.group import Group
+
+
+class Home(Group):
+    def __init__(self, *, entities: list[Entity] = []) -> None:
+        super().__init__(entities=entities)