Film the five things you say every week
Before you press record, write down the five explanations you repeat most: the grip, the beginner serve, the one drill everyone gets assigned, the mistake every intermediate makes. Those are the course. Each becomes a short clip of you demonstrating and talking, the same footage you would send a student after a lesson anyway.
Skip the welcome video, the equipment tour, and anything you would not say on court. Nine short clips beat two long ones, and a phone in decent light is what nearly every coach uses.
Keep each lesson to one idea
Two to six minutes per clip is plenty. Open with the result the player will get, show it, explain the one cue that makes it work, and end with a drill they can do alone. Attach a short worksheet or checklist where it helps, and group the clips in the order you would teach them.
Two prices and a free taste
Offer the course as a one-time purchase the student keeps, and offer a monthly membership for the students who want everything you publish. Different people buy in at different levels, and both can sit on the same page. Make the first lesson a free preview so a hesitant player can sample before paying.
A course has no geography. Once it is live, anyone with the link can buy, which is the point.
Sell it to the people who already trust you
Your current and past students are your first buyers. Offer the course to the experienced ones, assign a lesson as homework after a session, and bundle it with your lesson pack so your best offer gets more valuable without a discount.
When the students you know have bought, an ad comes next. Since the course sells anywhere, aim it at a wide audience, optimize for purchases, and let it run a full week before you judge it.
Coach names have been changed.