ANSI website sells private (i.e. watermarked for you; don't even think about sharing it online) PDF copies of the official 2003 standard (INCITS/ISO/IEC 14882:2003) for mere $18. I'd say, this will definitely be the best $18 spent if you're learning C++. Hell, most textbooks are more expensive than this, and they don't even cover all aspects of C++! The standard document can plug 99% of the holes in your textbook (i.e. unanswered questions that you may have).
P.S. For your information, standard documents like this usually cost more than $100. $18 is really a great deal. I just bought my copy, replacing the old 1998 standard that I bought a couple of years ago for $150 or so (about which I don't really feel ripped off, 'cause I'm pretty sure I've learned and earned more than $150's worth at work over the years)…. :)
P.P.S. To clarify: As the subject line says, this is not a tutorial, but a reference. A damn comprehensive one, too—perhaps I should say the reference. XD (Happy, Igene?)