1. Basic Electrical Engineering by Leonard S. Bobrow 2. Microelectronic Circuits by Adel S. Sedra and Kenneth C. Smith 3. Signal Processing and Linear Systems by B. P. Lathi

If you can comprehend Oppenheim, as suggested by the person above me, there is not a better book. In case you'd want an easier option, you may as well resort...

How about Basic Electrical Engineering by Leonard S. Bobrow for Basic Circuit Theory. and Microelectronic circuits by Sedra and Smith. I feel, B. P. Lathi too is a good bookk...