If you are a novice, this is by far the best investment you could possibly make in any poker related purchase.  The lessons learned in the pages of these seminal books on poker will more than cover the cost of buying them ... possibly in the first couple of sessions.

Poker Books

Why are poker books so critical to improving your game?  Because they are often written by world class professionals who have been playing the game for longer than you have been alive.  Imagine taking 40 or 50 years worth of experience and trying to condense it into a few books.  That's exactly what many of the best players have done.  Their insights should be thought of as a critical shortcut in your development as a player.  Why sit around and spend years at low limit tables trying to learn the lessons that these books can deliver when you spend a week or two reading them?  Do yourself (and your bankroll) a favor and pick up one, some, or all of these books.

Lee Jones:  Winning Low-Limit Hold'em, is also an excellent book on how to successfully play at lower limit hold'em games.  (Generally, stakes up to $3/$6.)

A word of caution.  Reading these books will NOT make you a professional player.  For one thing, you will probably have to read them 3 or 4 times each to fully grasp the value of the lessons they contain.  Secondly, especially if you are playing low-limit stakes, some of the play advocated in Super System may not work very well.  For example, the style Doyle Brunson describes in the No Limit section is very aggressive.  This is more likely to work in higher limit games where the cost to your opponent of keeping pace with such a strategy can be significant.  At lower limits, the cost of calling and being wrong is much smaller.  However, that's not to say that reading these books won't help you look at poker in a new and more analytical way.