You do not say what version of Lightroom!
The new version 6.0 apparently had a bug that did not allow the "Help" menu to connect with the Help document at Adobe.
Version 6.1 should have fixed this bug.
The help reference can be found at- https://helpx.adobe.com/lightroom/topics.html
and I recommend you download the .PDF http://helpx.adobe.com/pdf/lightroom_reference.pdf
This will save going to the internet always if the help is on your computer as pdf.
Re: Folders Setup-
Not sure what you need to know,
Lots of info on this topic on-line- eg. File Management | dpBestflow
It is however essential that you fully understand all the settings in the "Destination" panel of the import dialog. If you do not understand this, there is no telling where you will be importing your images onto your computer drive.
You may find more advice from Victoria Brampton and this very useful guide-