diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..bfea71f
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,16 @@
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.{md,py}]
+charset = utf-8
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[Makefile]
+indent_style = tab
diff --git a/README.md b/README.md
index e69de29..eef35b7 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,33 @@
+# code-advent-2023
+
+[Advent of Code](https://adventofcode.com/2023) problems of 2023.
+
+## Progress
+
+| Day | Name                | Part 1 | Part 2 |
+| :-: | :------------------ | :----: | :----: |
+|  1  |                     |        |        |
+|  2  |                     |        |        |
+|  3  |                     |        |        |
+|  4  |                     |        |        |
+|  5  |                     |        |        |
+|  6  |                     |        |        |
+|  7  |                     |        |        |
+|  8  |                     |        |        |
+|  9  |                     |        |        |
+|  10 |                     |        |        |
+|  11 |                     |        |        |
+|  12 |                     |        |        |
+|  13 |                     |        |        |
+|  14 |                     |        |        |
+|  15 |                     |        |        |
+|  16 |                     |        |        |
+|  17 |                     |        |        |
+|  18 |                     |        |        |
+|  19 |                     |        |        |
+|  20 |                     |        |        |
+|  21 |                     |        |        |
+|  22 |                     |        |        |
+|  23 |                     |        |        |
+|  24 |                     |        |        |
+|  25 |                     |        |        |
diff --git a/src/main.py b/src/main.py
index 1a8824d..295ce68 100644
--- a/src/main.py
+++ b/src/main.py
@@ -3,8 +3,11 @@ import sys
 if __name__ == "__main__":
     if sys.argv.__len__() != 2:
         print("[ERROR] Only the day should be specified")
+        print(" $ python src/main.py 1")
+        print(" $ make DAY='1'")
         sys.exit(-1)
 
-    module_selected = __import__(f"calendar.day_{sys.argv[1]}", fromlist=[""])
+    module_path = "modules.day_" + sys.argv[1]
+    module_selected = __import__(module_path, fromlist=[""])
     module_selected.run()
 
diff --git a/src/modules/__pycache__/day_1.cpython-314.pyc b/src/modules/__pycache__/day_1.cpython-314.pyc
new file mode 100644
index 0000000..1877ccc
Binary files /dev/null and b/src/modules/__pycache__/day_1.cpython-314.pyc differ
diff --git a/src/calendar/day_1.py b/src/modules/day_1.py
similarity index 100%
rename from src/calendar/day_1.py
rename to src/modules/day_1.py
diff --git a/src/calendar/tests/__pycache__/test_day_1.cpython-314-pytest-9.1.1.pyc b/src/modules/tests/__pycache__/test_day_1.cpython-314-pytest-9.1.1.pyc
similarity index 100%
rename from src/calendar/tests/__pycache__/test_day_1.cpython-314-pytest-9.1.1.pyc
rename to src/modules/tests/__pycache__/test_day_1.cpython-314-pytest-9.1.1.pyc
diff --git a/src/calendar/tests/test_day_1.py b/src/modules/tests/test_day_1.py
similarity index 100%
rename from src/calendar/tests/test_day_1.py
rename to src/modules/tests/test_day_1.py