New developer stuck at end of the tutorial.

So I've followed the tutorial for a new developer. Got my 30 trial, downloaded sage 50 cloud, Installed it, set up a company and created some test data. Created my developer account and registered an app. Downloaded the sample api app and got it connected to my sage developer app to read data. That's the end of the tutorial. Now how do I link the test data in my sage 50 cloud database so that the api's can read it? Sorry to ask such a basic question, but I've googled all I can think of and got nowhere. I'm hoping to read the data out so that I can link stock levels to an eCommerce shop I'm creating.

Any help you can give would be greatly appreciated.