As a beginner, you may need some basic electronics books (diodes,transistors,current..etc). If you are just starting out with electronics and want to have something to read, then I have some recommendations for you.
The Art of Electronics:Paul Horowitz and Winfield Hill
Often described as the Bible of Electronics. Its fair to say that if you buy this one, you wont need another for a while!
Contents:
Foundations
voltage and current; passive components; signals; complex analysis made simple.
Transistors
an easy-to-use transistor model
extensive discussion of useful