We checked out this book before putting it in the shop, its geared towards ultimate-beginners and teaches electronics starting from basic core of analog to some digital to microcontrollers. You'll learn tools, prototyping soldering techniques, transistors, 555's, etc. while completing useful projects. A nice and tidy intro! This book is a good accompaniment to learning microcontrollers/Arduino in that it fills the necessary electronics theory and background.
Want to learn the fundamentals of electronics in a fun and experiential way? Start working on some excellent projects as soon as you crack open this unique, hands-on book. Build the circuits first, then learn the theory behind them! With Make: Electronics, you'll learn all of the basic components and important principles through a series of "learn by discovery" experiments. And you don't need to know a thing about electricity to get started.
Get step-by-step instructions on building working devices that demonstrate fundamentals such as voltage, amperage, resistance, inductance, and capacitance. Then tackle more complex electronics concepts, including analog/digital conversion, logic gates, and integrated circuits. Along the way, you'll learn valuable tips and techniques, always with clear explanations of what you're doing and why.
If you've always wanted to learn electronics, but were intimidated by other books and overly-technical websites, this book is for you!