Open Cadence ADE
First, Chose the model Library you want to include
Eable DC analysis, AC analysis, noise analysis(Select the frequency you interest)
Then plot the AC magnitude and phase, you can check your GAIN, AC response, Phase margin here.
You can also plot the curve of noise
Plot the DC current from vdd and I*V is your power consumption, for your case CS amplifer, you just obtain the Id of either PMOS or NMOS and mutiply it with Vdd
If you google cadence tutorial, lot of materials will pop up
Good luck