I do not know where beginners get the idea that they need manual mode. Manual mode doesn’t teach you anything. You need to learn about the meter, why it’s telling you what it’s telling you, and how to control it. The best way to do that is with Program mode (P) and Exposure Compensation (EV Compensation on the K-x). THAT’S what you should really start with. That’s the +/- button right by the shutter. It’s a very important function. That’s why it’s right by the shutter.
The K-x is a bad camera for shooting in manual mode. The reason is that you don’t have graphic feedback. Most cameras have a horizontal meter in the viewfinder…exactly like the meter on the LCD screen (when in M mode.) That makes it much easier to adjust the settings of the camera because you have easily recognized feedback. The K-x viewfinder, however, only gives a + or – and a number. So you always have to read and understand the number to know if you need to move one or two clicks or if you need to move several stops. I find it way too distracting. Plus, all this trouble doesn’t teach you anything.
After understanding how to expose, you can then learn about how shutter and aperture affect the image. That’s best done with the A and S auto modes. Again, manual doesn’t help you one bit.
As a beginner, here are the two things you need to learn first…how to compensate exposure, and how to take a picture that is worth keeping.
To learn how to take a picture worth keeping, read Jodie Coston’s tutorial. Here are links to the main page and to lesson 1…
Classroom - MorgueFile Jodie Coston: Lesson 1 - MorgueFile
To learn how to expose properly, read the following...
Here is the most primary premise you need to understand…the meter tries to make whatever it’s metering into middle gray. That’s it. From that, all other exposure knowledge can be deduced.
The meter does not give you correct exposure...it gives you a standard exposure. That standard is middle gray. It’s supposed to match what our eyes are doing, and that’s why it works. However, our eyes are a little smarter than a meter, and they do not get tricked by certain situations. For example, a meter will expose a black cat as middle gray. It will also expose white snow as middle gray. But our eyes don’t make those mistakes.
So this is where the understanding comes in. If you look at a scene and say to yourself, “there are many black items in this scene, but I know my meter is going to try to make them middle gray” then you’re on the right track to understanding exposure. The next thing for you to deduce is, “to make black into grey requires more exposure (more light brightens the black.) So the camera is going to overexpose black.” Finally, you put your understanding and deductions to work by saying, “therefore I will set my EV Compensation setting to -1 to reduce the exposure.”
The reverse is true for a snow scene. The meter tries to make the snow grey. To make white into grey requires less exposure (less light darkens the white.) The camera is going to underexpose white. Therefore, set EV Compensation to +1 to increase the exposure.
At this point you should have all the understanding you need. Everything else is simply technique and experience...like learning to drive. You may start knowing all the rules, but you need to practice so that you can apply the rules without really thinking about it. This is the same thing...so that when you see that black cat or white snow you automatically know you may need to under or over expose.
One last thing to do…use the instructions in your manual to set the metering mode to Center-Weighted. Now you’re ready to learn about exposure. Practice changing the EC on a scene and review the effects. What you want is to be able to recognize when a scene is going to fool the meter. That's when you compensate the exposure by an amount determined by your intelligence and experience.
Good luck!