✦ Live day training · Noordwijk & Haarlem

Build your own business tool.

Your clients in a spreadsheet, your hours in a notes app and your quotes in Word. In one day you build your own tool with AI that fits exactly how you work. No coding knowledge needed, with me by your side. In English or Dutch.

  • 1 day10:00 to 16:30
  • Max. 8participants per group
  • 0coding knowledge needed
Sound familiar?

Your work is everywhere, except in one place.

→

Your clients are in a spreadsheet, your appointments in your calendar and your notes all over the place.

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You sometimes forget to follow up a lead, and that costs you clients.

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You keep writing the same quotes over and over.

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CRM software is too complicated or too expensive for what you need.

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You have an idea for a handy system, but no programmer.

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You hear everyone talking about vibe coding, but you don't know where to start.

You don't need to learn to code. You need to learn to explain what you need. The AI builds, you decide.

What you build

Choose your tool, and finish it.

You choose one of these four tools in advance. That way I have a suitable template ready for everyone and can help you in a focused way. Feel free to click through the examples: they really work, with made-up data.

Quotes and invoices

A quote from your own price list, as a tidy PDF, turned into an invoice with one click.

See the example →
Customer database

All your contacts in one place, with the next step for each person and a list of who to follow up today.

See the example →
Mileage log

Log trips in a few taps, odometer readings that add up and an overview for your accountant.

See the example →
Time tracking

A timer and your hours per client, so at the end of the month you see what you can invoice.

See the example →

Do you have your own idea, such as a stock list or an intake form? That's possible too, if we agree on it beforehand.

The promise of this day

You don't go home with a list of tips, but with your own working tool.

Everyone builds one tool for their own business, with their own colours and their own features. By the end of the day it's on your laptop, with a backup.

Vibe coding, in plain language

You say what you need. AI writes the code.

That's called vibe coding: you describe in plain language what you want to build, and AI makes it. You test, adjust and make the choices. We work with Claude, in the browser, so you don't need to install anything. More about vibe coding (Dutch).

Step 1 · The build brief

Who uses your tool, what data goes into it and which buttons you need. With my template, you have it on paper in twenty minutes.

Step 2 · Claude builds

You give your build brief to Claude and within an hour you have a first version that works.

Step 3 · You finish it

Step by step you make it better: search, totals, your own colours and logo, and a backup.

Programme for the day

From scattered lists to your own tool.

No lectures about code, but a day in which you build yourself. I walk around all day and help you until your tool works.

  1. 10:00

    Welcome and the demo

    I show you my own Urenboek, built without a coding background. That way you see where you can go.

  2. 10:30

    Your build brief

    Who uses the tool, what data goes into it and which buttons are needed. With the template, in twenty minutes.

  3. 11:00

    First version

    Your build brief goes into Claude, your tool opens and the first data goes in.

  4. 12:30

    Lunch

    Included, and a good moment to look at each other's work.

  5. 13:15

    Building it out

    Search and filters, follow-up dates, totals, and your own colours and logo.

  6. 14:30

    Safe and lasting

    Making and restoring a backup, and knowing what you should and shouldn't store in your tool.

  7. 15:15

    Testing with your own work

    Adding your final wishes, with personal help where you get stuck.

  8. 16:00

    Show and tell

    Everyone shows their tool and chooses a next step.

Times are approximate. We finish at 16:30.

Who it's for

Is this day for you?

For you if
  • you run a business or work freelance and want to organise your admin or client contact more smartly
  • you want your own system, because off-the-shelf software doesn't fit
  • you enjoy making something yourself
  • you have no coding experience, you don't need any
Not for you if
  • you expect a complete app with logins, an online database and payments in one day
  • you want to learn a programming language
  • you'd rather build at home at your own pace, then take a look at the online training Build your own CRM
  • you want to build a website, then take a look at the Vibe Code course (Dutch)
Practical

What do you need?

A week before the training you get a short checklist, so the morning isn't taken up by accounts and logging in.

Minimum

Your own laptop with Chrome or Edge (a tablet won't work) and a free Claude account.

Highly recommended

Claude Pro. With a paid account you can keep building much longer before you hit a limit.

Beforehand

Choose which tool you want to build and bring your current list, such as the columns from your spreadsheet or your notes.

During the training we work with made-up sample data. You add your real data at home. It stays on your own laptop, not on a server.

Waiting list

Put yourself on the list.

Dates are coming soon, in Noordwijk and Haarlem. Join the waiting list and you'll be the first to hear when you can sign up. No commitment. Let me know if you'd like the training in English.

You'll get a confirmation by email straight away. As soon as the dates are known, I'll email you and you decide whether to sign up. I only use your details for this, see the privacy policy.

€445
per participant · excl. VAT (€538.45 incl.)
  • Live day training from 10:00 to 16:30
  • Lunch included
  • Small group of 4 to 8 participants
  • Build brief template and prompt card
  • Your own working tool
★★★★★

“Thanks for the instructive training” (translated from Dutch)

Ellen, on Google · 5.0 average

Britt van Duijn, trainer at Studio van Duijn
Your trainer

Hi, I'm Britt.

My background is online marketing and SEO, not tech. Even so, I built my own Urenboek with AI, where I keep track of my hours, clients, invoices and SEO. That's exactly what I teach you, in plain language.

I deliberately give this training in a small group of up to eight people. That way I can help everyone, until your own tool really works.

See my Urenboek (Dutch) →
Frequently asked questions

Good to know.

No. You describe in plain language what you want and Claude writes the code. You learn how to explain it well, test it and adjust it.

A free account is enough to take part. With Claude Pro you can keep building longer before you hit a limit, which makes the day go more smoothly.

The approach also works with ChatGPT, but I run the day with Claude. That way I can help everyone properly and we all see the same screen.

On your own laptop, as a single file you open in your browser. You don't need a subscription or a server. You also learn how to make a backup.

Yes, that's possible, but it doesn't fit into one day for beginners. It's a great next step, or something I can build for you to order. My own Urenboek (Dutch) shows where you can grow to.

During the training we work with made-up examples. At home you add your real data. It stays on your own laptop and doesn't go anywhere.

They're coming soon, in Noordwijk and Haarlem. People on the waiting list hear first. The training goes ahead from 4 participants.

The price is €445 per participant excl. VAT (€538.45 incl.), including lunch. Once registration opens, you can pay straight away or by invoice.

Yes, you can. Would you like the training for your whole team, with a tool for your own work? Then a tailored team training may be more convenient.

Ready to build?

By the end of the day, your tool works.

You don't just know what AI can build, you've actually done it yourself.

Live day training €445 · excl. VAT (€538.45 incl.)

Put me on the waiting list →

Noordwijk & Haarlem · max. 8 participants · lunch included · in English or Dutch