The curve C has equation \(y = \frac{x^2 + 2x + 1}{x - 3}\).

1. Find the equations of the asymptotes of C.
2. Find the coordinates of the turning points on C.
3. Sketch C.
4. Sketch the curves with equations \(y = \left| \frac{x^2 + 2x + 1}{x - 3} \right|\) and \(y^2 = \frac{x^2 + 2x + 1}{x - 3}\) on a single diagram, clearly identifying each curve.