No problem, everyone starts somewhere.
I would have to recommend getting hold of the Registry of Guitar Tutors (RGT) Grade 1 handbook. It introduces basic chords, scales, techniques, and theory. I think a CD/cassette is available too.
Taking exams might not appeal to you, but working through grade exam material is a very structured way to learn, and there is no need to take the exam if you don't want to.
Have a look at
RGT and
Books For Guitar.
Matt