Restoring my 1972 Volvo Amazon: a challenge and a dream

After years of dreaming, I've finally started restoring my grandfather's 1972 Volvo Amazon. It's a project that's equal parts challenge and passion - the car has been sitting in his garage since '85, but its originality and charm are still intact. I'd love to hear from fellow enthusiasts on best practices for preserving its classic character while making it roadworthy again!