Hi,
Graphic designers and product designers have to develop an appealing design for clients. Graphic designers focus on designs done on a computer and product designers create designs that will be used to make real products. A designer might be interested in either of these career options, you have to identity which interests you more.
Typically subjects included in both subjects are as follows

Graphic design:

• Introduction to Graphic Designing
• Shaping, Design & Illustration
• Typography
• Graphic Designing Softwares & Tools
• Image Layout & Effects
• Photoshop
• Corel Draw
• Illustrator
• InDesign
• HTML/ Javascript
• Adobe Dreamweaver
• Adobe Flash
• Adobe Audition
• Computer Fundamentals
• Art & Visual Perception
• Vector Graphics for Designers

Product design:

• History of Art and Visual Culture
• Elements of Design
• Printmaking Techniques
• Digital Design Basics
• Creativity Techniques
• Creative Writing for Designers
• Economics for Designers
• Product Photography
• Digital Illustration Techniques
• Materials and Manufacturing Processes
• Digital modeling and Animation
• Design Thinking and Need Identification
• Product Ergonomics
• Mechanism Design
• 3D Modelling and Product Detailing
• Basic Electronics for Design
• Business Communication and Presentation Skills