I used to think building an online course was a multi-month project. Curriculum planning, content writing, recording, editing, platform setup — it felt like a production. So I kept not doing it.
Then I tried doing it as a one-day build. No videos (text-based courses are underrated and much faster to produce), no professional production, just: a clear topic I know well, an AI writing partner, and a deadline.
The result was a 6-module course on AI workflows for freelancers. I published it the same day. It’s sold consistently since — not life-changing numbers, but real money from something I built in eight hours.
Here’s exactly how to do the same.
Choosing your topic
The best one-day course topic shares three properties: you already know it well enough to teach it, other people want to learn it, and it has a clear before/after transformation.
That last part is the most important. The clearest courses promise a specific outcome: “By the end of this course, you’ll be able to [specific thing].” Vague topics (“intro to marketing,” “getting better at design”) are harder to sell and harder to structure than specific ones.
Good one-day course topic examples:
- “How to write cold emails that actually get replies”
- “Setting up your first AI automation workflow in n8n”
- “The freelancer’s guide to client onboarding”
- “How to do SEO keyword research with AI tools”
- “Building landing pages with Framer — from blank to live”
Bad one-day course topic examples (too broad or outcome-unclear):
- “Everything about AI tools”
- “How to be a better entrepreneur”
- “Marketing fundamentals”
Pick a topic you could teach in a 90-minute workshop. That’s the right scope for a one-day text-based course.
Building the curriculum with AI
Start by prompting Claude with your topic and your target student:
“I’m building an online course titled ‘[course title].’ The target student is [description: e.g., ‘a freelancer who wants to automate their client workflow using AI tools but has never used n8n’]. By the end of the course, students should be able to [specific outcome]. Design a 5-7 module curriculum that takes them from zero to that outcome in a logical progression. For each module: provide a title, a one-sentence description, and 3-4 lesson topics. The course is text-based, not video.”
Review what comes back critically. AI curriculum design tends toward comprehensiveness — it will often include modules that are interesting but not necessary for the stated outcome. Ruthlessly cut anything that isn’t on the critical path from zero to the promised transformation.
A good one-day course has 5–6 modules with 3–4 lessons each. That’s 15–24 pieces of content. Manageable in a day if you work efficiently.
Once you’re happy with the structure, write a one-sentence learning objective for each lesson. This gives you and the AI clear direction when writing content, and it tells students exactly what each lesson covers.
Writing module content
This is where most of your day goes. The key to writing course content efficiently with AI: you provide the substance, AI provides the structure and prose.
For each lesson, I use this process:
Step 1: Brain dump
Before prompting AI, spend 5 minutes writing everything you know about the lesson topic as rough notes. Key concepts, common mistakes, examples from your own experience, things you’d say if explaining it verbally. Don’t write prose — just bullet points and fragments.
Step 2: Prompt with your material
“Write lesson content for ‘[lesson title]’ in my course on [topic]. The learning objective is: [objective]. Here are my rough notes on the topic: [paste your bullet points]. Structure the lesson as: 1) a brief intro (2-3 sentences), 2) the main content (3-5 key points with explanations), 3) a practical exercise or action step. Total length: 400-600 words. Tone: direct and practical — like a smart colleague explaining something, not a textbook. Use examples where possible.”
Step 3: Edit for your voice
The AI gives you a well-structured draft. Edit it to sound like you — add your specific examples, remove anything generic, change phrasing that sounds too formal or too casual for your audience. Read it aloud; if you wouldn’t say it that way, change it.
Aim for about 30 minutes per lesson. With 18 lessons, that’s 9 hours — aggressive for one day. To hit the time budget, you either need to write faster or reduce the lesson count. I target 15 lessons at 20 minutes each.
Pro tip: batch similar lessons. Write all lessons in the same module in one session — you’re in the same mental context and the AI prompts get progressively better as it understands your material.
Choosing your course platform
Platform choice affects setup time, cost, and what you can charge. Here are the options I’d consider for a one-day launch:
Gumroad — fastest to publish
Gumroad lets you publish a course as a product with minimal setup. You upload your content as a PDF or a series of files, set a price, and you’re selling in under an hour. No ongoing platform fee — Gumroad takes 10% of sales on the free plan. Best for getting something live fast with minimal friction.
Teachable — best for a proper course experience
Teachable has a proper course structure: modules, lessons, progress tracking, quizzes, completion certificates. The free plan lets you publish one course (with limited features). Paid plans from ~$29/month remove the transaction fee and add more features. Best if you want students to have a structured learning experience.
Kajabi — best for serious course businesses
Kajabi is the premium option — course hosting, email marketing, landing pages, and a community feature all in one. Expensive (~$69/month) but powerful. Worth it if you’re building a course as a serious income stream and want everything in one place. Not the right choice for a one-day first build.
Notion + Gumroad — a practical middle ground
Build the course content in Notion (free), share it via a Notion page, and sell access via Gumroad. When someone buys, you add them to the Notion page or share a direct link. Low-tech but effective for validating demand before investing in a proper platform.
My recommendation for a first course: Notion for content + Gumroad for selling. Set up in under 2 hours, zero monthly fee, starts generating revenue immediately.
Writing your sales page
The sales page is the second most important thing you’ll write today (after the course content). It’s the page that converts interested visitors into buyers.
Prompt for Claude:
“Write a sales page for an online course called ‘[course title].’ Target audience: [description]. The course teaches [what it covers] and by the end students can [specific outcome]. The course is [X] modules, text-based, and priced at [price]. Structure: 1) a compelling headline (specific outcome, not the course name), 2) who it’s for (3-4 bullet points), 3) what they’ll learn (module overview), 4) why trust me as the teacher (brief background), 5) what’s included (content list), 6) price and CTA. Tone: direct, confident, no hype. Avoid phrases like ‘unlock your potential’ or ‘game-changing.'”
Edit the output with your own specific details. Add a genuine testimonial if you have one. Add one concrete result or specific claim that makes your authority real (“I’ve built 40+ automations for clients using exactly these methods”).
Pricing your course
Pricing anxiety kills more launches than bad content. Here’s a simple framework:
- €47–97: Impulse purchase range. Lower commitment, higher volume if traffic is there. Good for your first course where trust isn’t established.
- €147–297: Considered purchase. People do a bit more research before buying. Needs a stronger sales page and some social proof.
- €497+: High-ticket. Requires strong positioning, social proof, and usually some kind of community or coaching component.
For a first text-based course launched in a day with no existing audience, I’d price at €47–97. You can always raise the price as you get testimonials and build credibility. It’s much harder to sell an overpriced first course with no social proof.
Publishing and your first sale
By end of day you should have: course content in your platform, a sales page, and a payment link. Before calling it done:
- Go through the course yourself as a student — does the flow make sense? Is anything confusing?
- Test the purchase flow — buy your own course as a test to check the delivery mechanism works
- Write a launch post (LinkedIn, Twitter/X, or wherever your audience is) — 3 sentences: what the course teaches, who it’s for, and the link
- Email anyone who has expressed interest in the topic before — personal outreach converts better than any platform announcement
Don’t wait for it to be perfect. Ship it. The first sale will tell you more than any amount of polishing before launch.
What to build next
- → [LINK: How to Build a Newsletter with AI in One Day] — build an audience for your next course
- → [LINK: Build a Better Landing Page for Your Course]
- → Back to the Build with AI pillar
FAQ
Does an online course need to have video to sell well?
No. Text-based courses sell consistently and have some advantages: faster to produce, easier to update, and preferred by students who learn by reading rather than watching. For technical topics especially (the ones most AI courses cover), written instructions with screenshots often work better than video. The format matters less than the quality of the transformation you deliver.
How do i know if my course topic will sell?
Before building: post about the topic on social media or in relevant communities and see if people respond. Ask directly: “I’m thinking about building a course on X — would you be interested?” If five or more people say yes unprompted, it’s probably worth building. For more validation, pre-sell at a discount before the course is complete.
Can i build a good course in a day without being an expert?
Expertise is relative. You don’t need to be the world’s leading authority — you need to be meaningfully ahead of your target student. If you’ve successfully done the thing you’re teaching and can show your student how to do the same, that’s enough credibility for a one-day course launch. The market will tell you if your credibility isn’t there.
What’s the minimum viable course i can build and sell?
A PDF guide with a clear structure and actionable content, sold via Gumroad, is a valid course product. Five modules, 3 lessons each, 300–500 words per lesson — that’s ~6,000 words, achievable in a day. Don’t let platform complexity be the reason you don’t launch.
How do i get my first students without an existing audience?
Personal outreach first — anyone who’s asked you about this topic before, anyone in your network who fits the target student profile. Then post in relevant communities (not as spam — participate genuinely and mention your course in context). Consider a launch discount for the first 10 buyers. Your first 10 students are always the hardest; after that, word of mouth and platform search help.