Setting up your farm for SharePoint hosted up might be trivial but it can be rather complex when you have multiple web applications in your farm which are using the same IP and maybe also share the same SSL SAN certificate.
In this scenary you need to
To verify everything is configured correctly aquire a simple SharePoint hosted app – i.e. a HelloWorld app – and upload it to your app catalog. Create a test site collection and add the app to your site. Wait a little bit until the app (and the app web hosting the app) was added to your site collection and click the app tile in your site. You should be redirected to your app web and the contents of the app should be displayed (i.e. Hello World).