Hi meanwhileinfargo,
I hope the wedding isn't next weekend
What you are asking to do is not too difficult in liveCode but for a beginner it will take a few days/weeks.
The DataGrid isn't the best choice for beginners. While it looks just like a speadsheet it much more advanced than that (if you've ever looked it comes with over 8k lines of code in it).
how do I get the data to save in the application or a database in the cloud?
You will not be able to save new data into a standalone (the application) you have to have an external file.
You can save the updated data to a local SQLite database.
Lots of reading and practice to be done:
http://lessons.runrev.com/m/datagrid
for the DB:
http://lessons.runrev.com/s/lessons/m/4 ... e-database
Are you planning this for a commercial product? This makes a big difference to how you can approach the app.
Lots of people here just make stuff for their own use.
Simon
I used to be a newbie but then I learned how to spell teh correctly and now I'm a noob!