if you go under the time line button you can grab each section(clip) and move it left or right to lengthen it or shorten it. but you can only lengthen it so much. under edit movie just click Make titles or credits to add text to the clip (there will also be options to different effects to add to the text. if you want effects in the clip you have to split the clip up into different sections and such and slide the time line to where you want the text and or effect to be. hope this helps.