How do i download from iPhoto to a usb stick - Apple MacBook Mac Notebook

You can do that easily with iCloud or the third-party transfer tool, Check out this detailed tutorial if desired:
https://www.leawo.org/tutorial/how-to-transfer-photos-from-iphone-to-usb-flash-drive-1361.html?=1400

Hi Jo, if the size, quality, and the type of pic suits your needs do what kevin said, just copy, and paste it, but if the pic has to be altered to be compatible with the end use, do this
While in iPhoto bring up the pic you want to transfer, click on file (in the bar at the top of the screen) choose "export", it will give you the option to change size, type, name, quality, etc..
when your done click on the export icon, and if your flash drive is plugged in it will come up as an option ;-)