I have seen both of those videos. Not what I'm looking for. Isn't there ANYONE out there that can give me step by step instructions on how to record my animations?

I am VERY new to SketchyPhysics. It took me an entire day to make an object slide. I don't even need to make anything rotate....(yet) My problem is that I can't figure out how to record the animation and play it back. There are NO helpful videos anywhere on the net. Can someone PLEASE give me some step by step instructions on recording a VERY simple video. Litterally, making an object slide back and forth. That's it. Thank you.