I wanted to read everything in advance before I started too. I ended up not reading anything, and it's all worked out for the best.
Except for the dosage and calc book, and the test success book for fundamentals....I wouldn't get into the actual nursing books, they're too thick, and you never know where to begin...way too much info.
If you're dying to though...you could read about the history of nursing. I think most Fundamentals courses have a little section where they want you to know the history of nursing.
Or, look at those "Made Incredibly Easy" books - possibly the Physical Assessment made easy one, or the nursing procedures made easy...just read things you'll do the first semester, like iv's, meds, cath,etc...
You could go ahead and learn all those common medical abbreviations
. Maybe they're on the internet, or you could look in the back of a book and make flashcards for them.
Make sure you know how to take blood pressure, pulse, respirations. And really make sure you are able to do the dosage calculations with at least 90% accuracy!