Here's a video tutorial on what to do: It's made for 1.8, however the exact same video can be applied for 1.10.2, or any version over 1.8. It's the exact same download link, too!
@Noszzy You cannot download Craftbukkit any more following the DMCA. There are some forks who claim they provide a legal download, but they are not and are using a safe-haven host. If you are looking for a legal server, youd want to look toward Sponge.