Not getting the 3D Warehouse in SketchUp 2015

Getting problem in sketchup 2015. In the “window” there is no option of 3d Warehouse.
How can i get that

In 2015 the 3dwarehouse can be found in the file menu.

Please read this post: If you’re using SketchUp 2016 or earlier on Microsoft Windows, this message is for you - #10