What and where to ride to visit The Bird's Nest and The Cube after the Great Wall of China in Badaling?

hello!

After visiting the Great Wall of China in Badaling, we would like to visit The Bird's Nest and The Cube.
Please help us with what wand where to ride. From Badaling Great Wall, what and where are we going to ride to go to The Bird's Nest and The Cube? How much would be the fare? Thanks for the big help