Actually its not that simple.
You will need to figure out how you intend to store the notes. Do you want to use a database (SQLite) or a plain text file? If it’s a plain text file, how are you going to structure the data so you can tell each note apart? Are you going to save it as JSON, XML or some other format? If it’s some other format, you will need to write a parser to handle it.
Do you want the notes all in memory at the same time? Do you want a listView/tableView presentation of each note and tapping the note takes you to an editable screen to edit it? If so you will need to know how to use widget.newTableView and native.newTextBox() and undserstand how they all interact and how you read that database and populate the tableView.
There are many ways to accomplish this. In all cases, there are examples in the CoronaSDK/SampleCode/ folder to cover how to do database, list/tableViews, interact with native.text objects and so on. No there isn’t a single example to do this, but the parts are all there.
Rob