I know you aid "beginner", but what would you describe your experience as? Have you ridden before? Pavement only? Some dirt roads?
A fairly easy ride would be up/down South Willow Canyon in the Stansbury Mountains. Pretty well graded dirt road that isn't too steep. North Willow Canyon is another one. Ophir Canyon is paved until the town of Ophir, then it turns to dirt. It's usually in good shape.
As your skill set improves, you can branch out onto ATV trails such as the south fork of Ophir Canyon... Trails such as the Jacob City Loop ger steep and rocky, and could end up dumping you with ease. He'll, I haven't even taken the Jacob City Loop because I'm a little bit "inseam challenged", and getting footing on a steep trail while riding a tall bike can be challenging.