A version of How to Read a Book by Mortimer J. Adler is available in PDF format from the Everglades High School website. Though not the same one I have in my library — this one is geared towards reading the Great Books — it still contains a lot of information that would be useful to high school students, or to anyone who loves to read but feels they might be missing something in the approach.
What I love about this book is that it discusses how to read books on different subjects. Of course you don’t read a science book in the same way you read a novel, but what exactly is the difference? Well, now you know. Not only is it illuminating, it’s also a relief. It took almost no time at all for me to realize why I had such trouble making heads or tails of such works. I look forward to diving into them now!
Though I really suggest you part with the ten bucks or so for the actual print book, this PDF version will give you a great idea of what to look forward to.