I never heard of chesscafe.com. Anyway, the exeter chess site below is very good for explanations of different openings and tactics etc., but it's not that well laid out. Instead you're often better typing something into google eg
exeter chess openings "french defence"
Anyway, here it is... http://www.ex.ac.uk/~dregis/DR/chess.html
Also try:
an excellent archive of games complete with graphics to play through them all:
www.chessgames.com
and
www.chessworld.net