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http://www.kenilworthchessclub.org/articles/index.html (but a lot of these are ideas for White vs. the Caro)
In terms of books, try McDonald's Main-line Caro or if you want something both humorous + recent, seek out Lakdawala's book.
if you go to learn --> video lessons --> there is a lot of videos about the Caro Kann.
thanks but I would rather get a book not videos
I always promote the book by Schandorff. It's not totally perfect, but it's the best book on the subject for building a C-K repertoire. Also, don't dismiss so quickly the video series by GM Sam Shankland. It's almost exactly the same repertoire that Schandorff supports in his book, and is a great way to give yourself some preliminary education on the subject.
The repertoire Caro Kann book of the Danish GM Lars Schandorff is probably the best available ATM, but IMO it's unusable for a player of your level.
Better study the simple Shankland videos (although they are a tad dogmatic, and probably not very good for low rated players, either).
IM Lakdawala Played/plays the caro-kann for years so his book should get you a good foundation to learn and improve from. The Schandorff book requires a base knowledge of whats going on as is typical with any of the GM repertiore book. I also like the format of Lakkawala's books since he answers those but-why-cannt-i-do-this sort of beginner questions that are so obvious to strong players.
I knew very little about the Caro-Kann when I picked up the Schandorff book, yet I had no problem understanding it. Obviously by the time you 'should' be reading opening books, you have enough chess understanding to handle them anyway.
He and Shankland both prefer the Bf5-Bg6 treatment. I've played the line so many times in blitz that it becomes mere hand movements until you get to see where white wants to put the dark bishop.
It's a repertoire book, which means the lines are limited to what they suggest. So for the classical, it's:
As the main line choice. Both Schandorff and Shankland prefer kingside castling for black whenever there's a choice (implying that there's more chances to win).