I find it surprising that you would have a problem like this if you do not know "the steps".
In any case, the "Newton-Raphson" method for solving, say, f(x)= 0, is to start with some "test value", , and approximate y= f(x) with its tangent line approximation, . Setting that equal to 0 and solving for x, giving , will, under reasonable conditions, give a new value of x, closer to the root. Then we can repeat to get even closer.
Here, f is "vector" function and its derivative is the matrix so that, for a given starting point the next point would be .