To import a project from Github in Eclipse using Egit (the tool Eclipse uses to communicate with Github), follow the instructions on this video: https://www.youtube.com/watch?v=V42r5REJx-M
Things that have tripped people up in the past:
Don't click finish if there is an option to click next.
When selecting a wizard for importing the project, select "Import Existing Projects," not "Use the New Project Wizard." This second, and incorrect option, may be filled in by default.