I'm always willing to help beginning photographers learn how to use their cameras for free on this blog or on my yahoogroup, but if you want to get on the fast track to understanding how to use Manual Mode on your camera, then I invite you to sign up for my $99 Manual Mode course.
The course covers ISO, Shutter Speed, and Aperture all seperately and then puts them all together to teach you how to use Manual Mode. At a steady pace, the course takes around a month to complete. There are about 18 lessons in all, each lesson has only one or two pages of text (with pictures) to read and most lessons have exercises that go along with them. The course is designed to teach you one thing at a time and have you put it into practice before moving on to the next step. This structure ensures you don't get overwhelmed with the material or think you've learned the material, then get tripped up when you pick up your camera and try to apply it.
The cost of the course is $99 and payment is usually taken via PayPal.