On the topic of the OP:
I'll agree that the Super System books are good, but I don't know that they're the best ones for beginners. There's a couple of things that beginning players really need to keep in mind about these books:
- They were written quite a long time ago. Yes, I know Super System 2 was published a lot more recently, but the NLHE section (the one you're most likely reading) is pretty much the same and the game has changed a fair bit since then. Particularly in the NLHE section, Doyle talks like he expects to be about the only LAG in the game, and that most of the other players will be weak-tight or rocks. I don't think that's really a fair assessment of what you'll go up against in today's poker rooms.
- They are not low-stakes texts. I think about the lowest stakes the original version talks about is $20-$40 stud or something? Anyway, just remember that some of the strategies are very much tailored to high-stakes play. Putting pressure on someone over a pot that could buy you a new car is not the same as putting pressure on someone over a pot that could buy you a pack of cigarettes.
- They also assume you've got a certain amount of knowledge already under your belt, and could be a little dense as a first poker book.
If forced to pick one, I'd probably go for Phil Gordon's Little Green Book as a good place to start.