phasor - Can someone show this problem for this example step by step

Plot the magnitude and phase of the following complex functions:

G(w) = 1/(1+jw)

We never went over this in lecture but apparently I have homework on it. Looks pretty simple but just don't know where to begin. Could anyone maybe walk through the process of it rather than just answer?

edit: I apologize for my ambiguity here is the problem word for word:

Plot the magnitude and phase of the following complex functions:

(i) G(w) = 1/(1+jw)

(ii) G(ω) = −1/(1+jω)

(iii) G(ω) = j/(1+jω)