Hi TD! Smart move thinking about this now. There are others here who can probably offer more window cleaning specific advice, but I've created training manuals for other businesses. A good place to start is by writing down everything you do before, during, and after a job. That gives you the foundation for a training manual, checklists, and eventually training videos. It's also important to clearly communicate your expectations from the beginning and provide regular feedback, both positive reinforcement and constructive coaching, so new hires always know where they stand. If they'll eventually be working on their own, I'd definitely include plenty of ride-along training first. It gives you the opportunity to teach your quality standards, the technical aspects of the job, and how you want customers to be treated. Hope that helps a little, and best of luck as you grow your business!