Looking for neurology information

Hello people,
I am a student in high school who has always found an interest in
neuroscience.  Basically, my problem is that the only books I can find on
the subject are textbooks.  I am looking for some kind of book that serves
as an introduction, ideally a thorough one, to neuroscience that is not a
textbook.  If anyone knows of such a book, their recommendation of it
would be tremendously appreciated!  If no one knows of such a book, then
any other recommendation (of books on this subject that I may be able to
read) would be just as helpful. I know that many people reading this post
will think it is be insane for me to expect to be able to read something
like this, but I'd like to encourage these people to ignore that and help
me find a book. =]  I'm willing to read something ridiculously long.  I'm
willing to have to do research in order to understand what the book is
talking about.  I'd just like a place to start.

If anyone cares for a reason why I'm asking, keep reading.  Else, there's
no reason to waste your time, so you'll probably want to either go ahead
and post a reading recommendation or move on to another post.

I was prescribed by a physician Methylphenidate when about six-years-old.
It blew my mind that a pill could alter my brain's function in such a
major way, and I kept asking my physician for answers as to how it works,
but the most I could get at that age was the doctor's drawing on a pad of
paper of how she said it worked.  That sufficed at the time to make the
realize that the explanation was more than I could understand, at that
point at least.  To make a very long story short, I've been interested in
how these things work since then.  I've looked for as much information as
I can find regarding how exactly drugs like dextroamphetamine work, but I
accept now that I'll never understand until I have a much better knowledge
of neurology as whole.  So... that's my goal now:  To learn enough until I
understand the dopamine neurotransmitter and what effects amphetamine-like
stimulants have on it. The reason that I've posted to Usenet is that I
can't think of a better way of finding a way to find this information than
by asking people who have learned these things.  So, to get back to my
point, if anyone thinks they know of a way for me to get started, please
tell me what I can read.  Your input, whether in regard to books or not,
will not go unappreciated!

Thanks in advance everyone!
Chris Brunner

PS: If anyone knows of a better place to post this, please let me know.
PSS: Email is more likely to received by me if "newsaddy" is replaced
with "chris"