Need more info. It could be a constantly moving side-scroller or one that follows a character. It could be infinite or limited; which brings the possibility of it being limited to a background image that does not wrap or one that does. Etc. The easiest way is a limitless constantly moving repeating background side-scroller. No -- easier might be flat-colored background with actors that scroll across the screen (like black with stars) to produce the effect of scrolling. As you can tell, more info is required to give the proper type of help.

I am doing a limitless side-scroller that is following a character, with the background repeating.

Well, no scroller is easy and unfortunately, that (specifically) is one type I do not have an example of on the site (although I have several scrollers with source available -- some side-scrollers and some universal). My Timed Scrolling scenario is the closest thing I have up; but, it is a universal scroller. I would, however, contain everything you would need to learn from.

thanks