This is a question that I hear a lot. When you start to get more into photography the lens that came with the camera might not be enough for you. I made a video about the things you should consider when buying your first lens after the kit lens. Of course this video will help you to decide even if you are more advantaged photographer.
You can get any of those lenses from my kit.com store. (disclaimer: I get a few bucks if you buy from these links.)
The link to the store: https://kit.com/PeterF/next-olympus-m-zuiko-lens-after-the-kit-lens