We live in the suburbs and there aren't any self defense classes around here. The closest one is about 45 min. from our house so we started to look for some self defense videos on the web when we found "Pure Krav Maga - Self Defense Mastery" couple of months ago.
First time we have watched whole 7 hours (with breaks :-) and after that we choose 10 techniques that could be applied to the most probable street or parking lot attack scenarios.
Videos are very easy to follow for an average Joe. Both of us had never any previous experience with self defense.
First few times were a little bit clumsy but we could see huge improvements in the speed and out techniques as we did our exercises following scenes from these DVDs.
I guess this is just like everything. If you want to see results you need to do your homework and spend some time to practice.
I can see that my wife's self-confidence is much higher now since we do our exercises and this DVD was a great tool to help us reach that level of feeling safer whenever we are on the streets now.
I would most definitely recommend this DVDs to anybody who is serious about self defense.