Self Education books

Engineering is very wide. Do you mean electrical, electronic, chemical, civil, bioengineering, satellite, etc, etc.... You should be more specific otherwise no one knows the better which topic you are really interested. The easiest way might be to go www.amazon.com and see what books are out there. You could try the schaum series...reasonably cheap and full of worked examples although I didn't use much of it as a student many many many moons ago. I just use recommended texts, and if not sufficient, there's always the library.