Holding a guitar properly is essential for comfort and technique. Make sure you're seated comfortably or standing with a strap. Rest the guitar body on your thigh if sitting, ensuring it's stable, and keep your back straight. Your fretting hand should have a relaxed grip on the neck, with the thumb positioned at the back. Are you just starting out, or are you looking to refine your technique? What kind of guitar are you learning on? I'm here if you have any other questions!