the simplest way to create a todo list in Notion is by using the /to-do list command
/to-do list command (simplest way)Type /todo list command
Choose the todo list block type

You can also create a database and add a property with checkbox type.
This method let you create task with more complex and longer details because you can use a full Notion page to describe your tasks.
Create a database with the /database command

Choose new database
Add a property with type checkbox

Write your pages content
