eBooks
Here is a list of eBooks. Most of these are advanced texts, some of them are tomes or cyclopaedic. There are also plenty of good articles and white papers to be found on the Internet.
Electronics
Teach Yourself Electricity & Electronics. Stan Gibilisco
Basic Electronics. Forrest Mims (13MB)
The Fields Of Electronics. Ralph Morrison
The Art of Electronics. Horowitz & Hill (93MB)
Radio Shack Engineering Notes
The Electrical Engineering Handbook (61MB)
The RF And Microwave Circuit Design Cookbook. Stephen Maas (32MB)
Radio Frequency Integrated Circuit Design. Rogers & Plett (10MB)
Broadband Microwave Amplifiers. Virdee, Virdee, & Banyamin
High-speed Digital Design. Johnson & Graham (20MB)
The Illustrated Dictionary of Electronics. Stan Gibilisco
Theory and Design of Electrical and Electronic Circuits. E Tait
Opamps for Everyone. Ron Mancini
XYZ of Oscilloscopes
The Radiotron Designers Handbook
Handbook of Electrical Engineering. Alan L. Sheldrake
Operational Amplifier Distortion. Samuel Groner (37MB)
Electrical Engineering know it all
Electrical Engineering Dictionary
Analog Electronics. Ian Hickman
The Electrolytic Capacitor. Georgiev
Basic Electronics. Forrest Mims (13MB)
The Fields Of Electronics. Ralph Morrison
The Art of Electronics. Horowitz & Hill (93MB)
Radio Shack Engineering Notes
The Electrical Engineering Handbook (61MB)
The RF And Microwave Circuit Design Cookbook. Stephen Maas (32MB)
Radio Frequency Integrated Circuit Design. Rogers & Plett (10MB)
Broadband Microwave Amplifiers. Virdee, Virdee, & Banyamin
High-speed Digital Design. Johnson & Graham (20MB)
The Illustrated Dictionary of Electronics. Stan Gibilisco
Theory and Design of Electrical and Electronic Circuits. E Tait
Opamps for Everyone. Ron Mancini
XYZ of Oscilloscopes
The Radiotron Designers Handbook
Handbook of Electrical Engineering. Alan L. Sheldrake
Operational Amplifier Distortion. Samuel Groner (37MB)
Electrical Engineering know it all
Electrical Engineering Dictionary
Analog Electronics. Ian Hickman
The Electrolytic Capacitor. Georgiev