diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bc8a670
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea/*
\ No newline at end of file
diff --git a/README.md b/README.md
index 6ca71e1..0e55171 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,3 @@
 # python-notepad
  
+## Commands
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..b234f38
--- /dev/null
+++ b/main.py
@@ -0,0 +1,94 @@
+from tkinter import *
+from tkinter.filedialog import askopenfilename
+
+
+class App(Tk):
+
+    def __init__(self, width, height):
+        # Variables
+        self.width = width
+        self.height = height
+        self.current_file = ""
+        self.file_types = [("TXT file", ".txt"), ("All files", ".*")]
+        self.title_text = "NotePad"
+
+        # Create window
+        Tk.__init__(self)
+        self.geometry(f"{self.width}x{self.height}")
+        self.set_title()
+
+        # Window content
+        self.create_menu_bar()
+        self.textarea = self.create_textarea()
+
+    def set_title(self, name="new"):
+        self.title(f"{self.title_text} | {name}")
+
+    def create_menu_bar(self):
+        menu_bar = Menu(self)
+
+        menu_file = Menu(menu_bar, tearoff=0)
+        menu_file.add_command(label="New", accelerator="CTRL+N",
+                              command=self.new_file)
+        menu_file.add_command(label="Open", accelerator="CTRL+O",
+                              command=self.open_file)
+        menu_file.add_command(label="Save", accelerator="CTRL+S",
+                              command=self.save_file)
+        menu_file.add_separator()
+        menu_file.add_command(label="Exit", command=self.quit)
+        menu_bar.add_cascade(label="File", menu=menu_file)
+
+        # Accelerators
+        self.bind_all("<Control-n>", lambda x: self.new_file())
+        self.bind_all("<Control-o>", lambda x: self.open_file())
+        self.bind_all("<Control-s>", lambda x: self.save_file())
+
+        self.config(menu=menu_bar)
+
+    def create_textarea(self):
+        textarea = Text(self, width=self.width, height=self.height)
+        textarea.pack()
+        return textarea
+
+    def is_file_open(self):
+        return self.current_file != ""
+
+    def new_file(self):
+        if self.current_file != "" or self.textarea.get(1.0, END) != "\n":
+            self.save_file()
+            self.current_file = ""
+
+        self.textarea.delete('1.0', END)
+        self.set_title()
+
+    def open_file(self):
+        file_path = askopenfilename(title="Choose the file to open",
+                                    filetypes=self.file_types)
+
+        if file_path != "":
+            self.current_file = file_path
+            with open(self.current_file, 'r') as file:
+                file_content = file.read()
+
+            self.textarea.delete('1.0', END)
+            self.textarea.insert(1.0, file_content)
+            self.set_title(self.current_file)
+
+    def save_file(self):
+        content = self.textarea.get(1.0, END)
+
+        if self.current_file == "":
+            current_file = askopenfilename(title="Choose the file to save",
+                                           filetypes=self.file_types)
+            self.current_file = current_file if current_file != "" \
+                else self.current_file
+
+        if self.current_file != "":
+            with open(self.current_file, "w") as file:
+                file.write(content)
+            self.set_title(self.current_file)
+
+
+if __name__ == "__main__":
+    window = App(500, 500)
+    window.mainloop()
diff --git a/start.bat b/start.bat
new file mode 100644
index 0000000..f6d6aea
--- /dev/null
+++ b/start.bat
@@ -0,0 +1,2 @@
+@ECHO OFF
+python main.py
\ No newline at end of file