# Period, amplitude and phase through FFT in MATLAB

I need to compute period, amplitude and phase of the signal from spectrum analyser. It looks like a sine wave. Since i am new to MATLAB and also have limited idea about Fourier transforms, I am looking for a simplified explanation of how i might use FFT to compute period, phase and amplitude through MATLAB programming. The information i have regarding signal are: sweep time: 0.3183s sweep: 2001 save loop: 100. Thank you so much in anticipation.

L = length(x);                   %%% Length of your signal