There's nothing to be confused about. Hemp and Cannabis look the same, but hemp is for industrial use and doesnt get you stoned, Cannabis is for people like us to smoke and get fuck faced. What you've probably got on your hands is alot of female hemp plants. You might get bud from em, and it might look rather good with the amount of trichomes, but the THC and other active cannabinoid levels are so damn low you just will not get high. I supose it'd be better than smoking tobacco though. I wouldnt imagine it'd burn very well either.

But, since your not spending any money you'll be alright so at least you aint gunner loose anything.