It's not a book series but check out iTunes U. They have a lot of Electrical Engineering/basic circuit lectures from places like UCal Berkley, etc. I am trying to go over some of these lectures so my courses next semester are easier. You can also check out OpenCourseWare by MIT, it's the same idea but they include worksheets and class notes.
Here is an example of an entry level EE course,
http://itunes.apple.com/us/itunes-u/electrical-engineering-100/id461056423 .