Lyrics / staffs/ contexts - which way is best for me

[andrew Black]

Hi
I am fairly new to lilypond.   I have RTFM-ed but am rather confused by 
the number of ways of adding lyrics to a score.   My confusion might be 
caused by not understanding what \new and \context does.

My basic requirement is
 - SATB, each one line
 - piano part

It seems to me that I need to build up a template to do this
(and by building it up myself I will understand it!)
My starting point was 
http://lilypond.org/doc/v2.4/Documentation/user/out-www/lilypond/Vocal-ensembles.html#Vocal-ensembles
but this combines SA and TB which makes it too complex for what I want.

Can someone walk me through setting this up
Thanks