Really basic stuff

Is there a tutorial on really basic stuff? I’ve tried to follow thru the agricultural soil community and the esophageal community analyses tutorials, but I can’t even figure out how to get thru the “Getting Started” part. I’ve never used a command line software before, so I don’t even know how to “download and unpack the greengenes database” or “be sure that you are in the “Esophagus” folder.” Thanks, anyone, for any help!

This link:

has a great tutorial. Click ‘just the documentation’ to download the pdf. Do at the least the first half and you should be good.