For the following two differential equations which model birth rate in relation to population density
$\dfrac {dN}{dt} = bN^2 - aN$,
$\dfrac {dN}{dt} = bN^2 \left(1 - \dfrac N K \right) - aN$
where $a$ and $b$ are positive constants
I need to locate the equilibria of $N$, determine stability, and sketch solution curves for "various starting values" $N_0$.
I have no idea how to go about this.