Hi Scott,
Despite the fact that I know nothing about Mechanical Engineering, as a first year Electrical/Electronic engineer, I do recommend you few great examples to take a look at:
Introductory Circuits - Robert Spence. Easy-understandable information, straightforward and with examples included.
Digital Design - Mano, M. Morris. Although I didn't use this book much, I know it has everything about digital design.
The Art of Electronics - Horowitz, Paul. If you want to understand electronics fundamentally, this book has to be on your desk. Huge amount of info. Great writing style though.