What is a normalised sampling and how to perform it?

Normalised sampling

Hi all,

Can someone please advise me, what does it mean by normalised sampling?
How to perform sampling in the first place?

I've tried to perform FFT in Excel.
In Column A, I have input value time 't'=0, 1, 2, 3, 4, 5...., 62, 63
then in column B, i have rect(t)=1, 1, 1, 1, 1, 1,..., 0, 0
Next, i perform FFT based on rect(t) and got the corresponsing results in column C.
I also have a column F for frequency, F(i) = i*(sampling_rate / FFTsize) and column E for i (FFT array index)

where:
FFTsize = 64
i = each FFT array index (0 ... 63)
sampling_rate = (need to find, in Hz)


Is the information above, sufficient to perform sampling?
If yes, How to perform sampling this case?
I really hope someone can advise me on this.
Thanks for any advice in advance

Regards,

Sulphine