You'll also see a lot of help in the margins of this book. Here's how it looks and what it means.
This is stuff that I figured I should tell you when it popped in my head. Notes aren't essential reading, but I urge you not to skip them as you'll learn a lot of extra stuff here that you might not find elsewhere.
These succulent bits of info should help you with odd problems or give you insight into issues that are confusing. Don't skip these! Here, you'll find faster ways to accomplish tasks , insider tidbits, and expert tips I've accumulated along the way.
These blurbs keep you out of trouble. I hope. If you don't read these, you're asking for trouble. Security is risky business. I've done my best to point out common pitfalls, gotchas, and other assorted nasties.
Occasionally, I've added some additional information that's ancillary to the main topic, but still worth reading. Think of these as important stuff that didn't fit anywhere within the confines of the chapter you're reading, but are too important to skip.