Not a course, not a channel. One lesson you already teach, turned into something that can earn while you are at school. The whole kit is on this page with nothing to sign up for.
Start from a lesson plan you have already written and already taught. Pick the topic your learners get wrong every year — the one you re-teach in every revision session.
0:00–0:30 — Name the thing they got wrong. Not a greeting and not the learning outcome. Open on the mistake.
0:30–2:00 — Show the wrong answer in full. Work the common error all the way through, deliberately, without flagging it.
2:00–7:00 — The method, one step per beat. Say the step, do the step, say why. If you catch yourself saying "and then obviously", that is the step your learners are missing.
7:00–10:00 — A second example you don't finish. Work it to the second-last step and stop.
10:00–12:00 — The one-sentence rule. Finish with the rule phrased the way you say it in your own classroom.
Put the window in front of you, not behind. Get the microphone closer than feels natural — wired earphones beat a laptop's built-in mic comfortably. Record in a room with curtains, carpet or a full bookshelf to kill echo. Shoot landscape with the phone propped still. Do one take and keep it.
A recorded lesson and a tutoring hour are different products: one is sold many times, the other once. Price against your own effective hourly rate rather than against the cheapest tutor. And count the commission — on Minerva you keep 85% and are paid on the 5th monthly with no withdrawal minimum, where a 35%-commission marketplace turns a R400 sale into R260 rather than R340.
Does your employer allow outside work? Check your contract or ask HR before you publish rather than after.
What happens with tax? Income outside your salary generally has tax consequences and may mean registering as a provisional taxpayer. Speak to SARS or a registered tax practitioner — this is not tax advice.