Re: Delivering crystal and unobtanium
If there's a green check above a charge pad, then that comm tower has already been recharged. You should use the charge cubes you've picked up to recharge other comm towers located around the world.
If you need some help navigating around the world, check out the PDF version of the world map: http://www.robotvirtualworlds.com/operation-reset/files/operationReset_Full.pdf
The crystals should be deposited by driving onto crystal pad, located just to the northeast of coordinate F7 on the map I linked above.