diff --git a/chatsky/slots/standard_slots.py b/chatsky/slots/standard_slots.py
index 364940b1b..f361c9817 100644
--- a/chatsky/slots/standard_slots.py
+++ b/chatsky/slots/standard_slots.py
@@ -69,6 +69,7 @@ class RegexpGroupSlot(GroupSlot, extra="forbid", frozen=True):
     groups: dict[str, int]
     "A dictionary mapping slot names to match_group indexes."
     default_values: dict[str, Any] = Field(default_factory=dict)
+    # TODO: write docstring, could copy from tutorial
 
     def __init__(self, **kwargs):  # supress unexpected argument warnings
         super().__init__(**kwargs)
diff --git a/tutorials/slots/2_regexgroupslot_and_string_format.py b/tutorials/slots/2_regexgroupslot_and_string_format.py
index e919fc106..91826fd66 100644
--- a/tutorials/slots/2_regexgroupslot_and_string_format.py
+++ b/tutorials/slots/2_regexgroupslot_and_string_format.py
@@ -32,6 +32,34 @@
 
 # %% [markdown]
 """
+## RegexpGroupSlot extraction
+
+The `RegexpGroupSlot` class reuses one regex.search() call to save on
+execution time in specific cases like LLM, where the amount of get_value()
+calls is important. 
+
+## RegexpGroupSlot arguments
+
+* `regexp` - the regular expression to match with the `ctx.last_request.text`.
+* `groups` - a dictionary mapping slot names to group indexes, where numbers
+        mean the index of the capture group that was found with `re.search()`
+* `default_values` - a list of functions that run after the service.
+        You can read more about the handlers in this [tutorial]
+
+This means higher efficiency than a GroupSlot of RegexpSlots,
+because only a single regex search is performed. It is saved and reused
+for all specified groups, thus reducing the amount of calls to your model,
+for example an LLM model.
+
+The `RegexpGroupSlot` class is derived from `GroupSlot` class, inheriting
+its `string_format()` feature, which will be explained later in this tutorial.
+Though, `partial extraction` is turned off for this class.
+
+This means that unsuccessfully trying to extract a slot will not overwrite
+its previously extracted value.
+
+Note that `save_on_failure` is `True` by default.
+
 The slots fall into the following category groups:
 
 - Value slots can be used to extract slot values from user utterances.
diff --git a/tutorials/slots/2_partial_extraction.py b/tutorials/slots/3_partial_extraction.py
similarity index 99%
rename from tutorials/slots/2_partial_extraction.py
rename to tutorials/slots/3_partial_extraction.py
index aa8e7875e..7f4d7c4fa 100644
--- a/tutorials/slots/2_partial_extraction.py
+++ b/tutorials/slots/3_partial_extraction.py
@@ -1,6 +1,6 @@
 # %% [markdown]
 """
-# 2. Partial slot extraction
+# 3. Partial slot extraction
 
 This tutorial shows advanced options for slot extraction allowing
 to extract only some of the slots.