This is one of my favourite books and though rather dated (the last game cited is from 1948) it's also extremely instructive.
In 100 annotated games, Konig discusses the opening theory of four openings: the Ruy Lopez, Queen's Gambit, English Opening and King's Gambit.
It takes an evolutionary approach to chess theory, and instead of jumping in to contemporary theory, tells the story of how that theory came about. So we trace the English Opening from Staunton's new(!) approach in 1843 to Golombek's ideas in 1939.
The Swiss Defence gets its name from Henneberger, a Swiss player who, among other games, tried it in a smul against Alekhin in 1925. He played strongly, and that may have alerted Alekhin to its potential:
opening will rest (or should rest) on several
considerations: your style and temperament as
chessplayer, your time and aptitude for study,
ambitions as a player. The standard recommendation
Black counters in the centre, provoking an immediate crisis. White must defend or dodge.
The Caro Kann has a reputation of being a boring defence. It is quite deserved, I believe. Black aims for a solid position where White's space and activity can be held in check and in the end neutralised by exchanges. It is a system free from weaknesses and has been popular among top Grandmasters for many years.
It is not, however, your best choice if you want to play for a win, unless your technique is very good.