Before you dive in, we suggest you get an overall quick feel for the process by following the steps in our Quick Start - Create Your Own App.
You have a choice to create either a hybrid app or a web app. For more details see ViziApps App Types.
Look for the context-sensitive help buttons throughout the ViziApps Studio:
Adding a large number of images will cause your app to take longer to load. Make sure to use PNG format for graphics and JPG format for photos, and optimize the jpeg settings for smaller size.