JayNir,
I don't consider myself as an expert. I am still learning it. But I do use manual settings most of the time when I am shooting outdoor, specially when there is serious lighting condition ( too bright or too dark ), When taking picture of fireworks and when taking fast moving objects.

I have also posted some of manual settings technique in my blog. I think you would have noticed if you have visited my blog. My blog address is here for your info.

http://blog.umeshupreti.com

Regards,
Umesh