Auto and cross correlation

Hi there.
I’am a electrical engineering student from Slovenia (small country in central Europe). I would first like to thank you for all the help in understanding calculus and other math concepts. For past two days I have struggled to understand convolution integral and after two day of agony and tones of other sources I found this a bit hidden platform aha.betterexplained.com community, which is harder to find than mainstream betterexplained.com and I did not find any link to the first in the later.

Because the first gave me even more, I would like to suggest, that you promote this aha.betterexpl… even more on the mainstream page.
And is there any way, you could do something similar about auto- and cross-correlation since it is tightly connected to the convolution integral.

I hope I was not to long and THANK YOU AGAIN FOR YOUR INSIGHTS ON COMPLEX MATH TOPICS!!! =)