Hello!
Thanks for the comment! I'll be happy to try to answer your question then!
- You're controling the crane at the top of the screen: use SPACE to grab an item when your hook is on it, and ARROW DOWN/S to release it (depending on the control scheme you selected in the options menu).
- You have to grab, then release the items asked by Joff (your manager): there is an indication bottom right about what he wants you to pick-up for delivery (also the amount). Simply drop the items in the little pad, in the middle of the screen, and once you'll drop enough you'll see a "DELIVER" text showing up on the screen: press F to deliver them so Joff will be happy and ask you for another delivery!
Please let me know if it's not clear enough, hope you'll enjoy your play time!