Final answer:
Mark's digital camera offers a user-friendly interface which is demonstrated by the intuitive symbols and icons, allowing him to quickly and effectively begin using the device without reading the manual.
Step-by-step explanation:
The characteristic of Mark's new product that makes it easy for him to begin his digital experience is user-friendly interface. Digital cameras are designed to be intuitive, allowing for quick access to essential functions like photo preview, playback, and delete without extensive prior knowledge.
The symbols on the camera, such as the playback button marked with a triangle icon, are part of this interface, guiding the user effectively. Additionally, the camera's mode selection dial features little picture icons (scene modes) that visually indicate their function, making it straightforward for users to select the appropriate settings for different shooting scenarios.