You apply an effect or multiple FX to a clip and you alter the parameters so they do what you want.
Reading and viewing basic tutorials will get you started,
where can I find information about applying visual effects to video in CS6?
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In the Basic Video tutorials or the Premiere Help Files will be best for you at this stage.
but..as a start ...
edit a clip to the timeline (sequence) then go to the Video Effects Window and drag an Effect onto the clip...then alter the parameters of the Effect. in theEffects Control Window