I don't want to climb on a ladder either (for safety reasons). What kind of supplies, cleaner do I need to buy? Thanks.
go to your local home depot or lowes they sell a bottle that hooks to your hose that you squirt on your windows then rinse. Providing your hose stream will reach that far if not rent a lift from an equiptment rental store they are safe and easy to use. And not that expensive we rent them usually for 135 dollars for all day.
Call a window washing company, buy the time you buy supplies and stuff it will be cheaper to have a service. Link to window washers below