Domain: All real $x,$ except $x=-2$ and $x=2$
$f(-3)=-1, f(0)=0, f(3)=1$
$f^{\prime}(x)<0$ on $(-\infty,-2)$ and $(2, \infty)$
$f^{\prime}(x)>0$ on (-2,2)
$f^{\prime \prime}(x)<0$ on $(-\infty,-2)$ and (-2,0)
$f^{\prime \prime}(x)>0$ on (0,2) and $(2, \infty)$
vertical asymptotes: $x=-2$ and $x=2$
horizontal asymptote: $y=0$