Wood characteristics

i'm considering building my own guitar and i need some tips about the wood choice for the body.
what are the characteristics of woods like basswood, mahogany, alder ash?
what are the setbacks of each?
and will a combination of mahogany body and basswood top will be a good idea?
also should the interior be completely hollow or only in neceserry places like for the tremelo and wiering?

thanks.

actually fender uses alder and ash mostly.
but if i'll use a maple top on mahogany body will it reduce the mahogany effect greatly or will it make a noticeble difference at all?
the thought behind this is to add highs to a highless mahogany body.
also does a neck through means that the neck is made of the same pice of wood the body is made off?
any suggestions for fretboard wood?
i want the guitar to have a bassy powerfull warm sound, i'm considering putting a tone lock too, but i do want it to be somewhat versatile, depending on the setup with the destortion and effects.