Bring your walking shoes when visiting Rome. There's just so much to see on foot. One one my favourite walks stars at Via Condotti, a popular upmarket shopping street which brings to the Spanish Steps. Climb the steps, enjoy the view at the top and then walk left along Viale della Trinata dei Monti. Walk along this way all the way to Pincho hill. Definitely enjoy the view at Pincho hill and then make your way down to Piazza del Poppolo. From there, walk down Via del Corso till you reach Via Condotti again. Simple.