Добавлены миддлвари на примере ThrottlingMiddleware

handlers/user/__init__.py

@@ -1,8 +1,10 @@
 from aiogram import Dispatcher
-from aiogram.dispatcher.filters import CommandStart
+from aiogram.dispatcher.filters import CommandStart, CommandHelp
 
+from .help import bot_help
 from .start import bot_start
 
 
 def setup(dp: Dispatcher):
-    dp.register_message_handler(start, CommandStart())
+    dp.register_message_handler(bot_start, CommandStart())
+    dp.register_message_handler(bot_help, CommandHelp())

handlers/user/help.py

@@ -0,0 +1,13 @@
+from aiogram import types
+
+from utils.misc import rate_limit
+
+
+@rate_limit(5, 'help')
+async def bot_help(msg: types.Message):
+    text = [
+        'Список команд: ',
+        '/start - Начать диалог',
+        '/help - Получить справку'
+    ]
+    await msg.answer('\n'.join(text))