QUOTE(ruitian97 @ Apr 16 2014, 08:32 PM)
Can anyone teach me how to use the modes? Even after i read thru many guides and tutorials i still cant really understand. What if i wanna take a pic outside? normally what aperture should i use? and what shutter speed?

The image on the lower right is taken with a wider aperture.Basically if you use a wider aperture then you will get a shallow depth of field, means that only your subject will be in focus while everything else (a certain distance front/back of your subject) will be blurred.
You can use this to make your audience focus on the things you want them to see.
Smaller aperture will give you a deeper depth of field, this means that if the aperture is small enough, everything within the image will be (somewhat [depending on the lens]) clear.
Shutter speed means how long you want your sensor exposed.
A longer shutter speed creates a sense of movement, but if you want to catch a fast moving object, you need a fast shutter speed to freeze them in place.

ISO, aperture and shutter speed go together but it's best to leave this part for later till you get a better grasp of how things work.
Go out and experiment, you'll understand better.
*Images are taken off google images and belong to their respective owners.
This post has been edited by Jackie-Cham: Apr 16 2014, 10:29 PM