SQL · Excel · in your browser

Learn SQL and Excel by doing it yourself

Short, interactive lessons with real queries and formulas. You see straight away what you're doing and why it's right. No videos, no installation.

Start with SQLStart with Excel

Start free · no account needed

What you learn

  • SELECT and WHERE
  • JOIN and GROUP BY
  • Subqueries and CTEs
  • Window functions
  • Formulas and functions
  • Relative and absolute references
video-store.sql
SELECT genre, COUNT(*) AS films
FROM films
GROUP BY genre
ORDER BY films DESC
LIMIT 4;
genrefilms
animation5
sci-fi4
drama4
crime3

Correct+15 points

Spreadsheet
fx=SUM(B2:B4)
1ProductSold
2Coffee42
3Tea27
4Cake18
5Total87
courses
2
short lessons
94
exercises
750+
in your browser, on your phone too
100%

Why Lurndo

Watching teaches you little. Doing it yourself does.

An hour of videos feels productive, until the next day you have to write a query or formula yourself. At Lurndo you type from the very first minute, on real data, and you see straight away what happens.

  1. 01

    Doing, not watching

    No long videos or walls of text. Every lesson teaches you one idea with a short explanation, and then you practise straight away.

  2. 02

    You see what happens

    Rows dropping out, tables sliding together, formulas recalculating. You understand not just that it works, but how.

  3. 03

    An explanation for every answer

    When you get it wrong you see what went wrong, and hints get more concrete step by step. After every answer you read why it's right.

  4. 04

    Made for real work

    You work for clients with realistic data and run into the pitfalls you also meet at work.

The courses

Choose where to start

SQL8 modules · 44 lessons

Learn SQL by playing

Short lessons with real queries in your browser. You see straight away what your query does, from your first SELECT to window functions.

Try it here

Try it right away. Finish the query so you only see the video store's horror films.

What you learn

  1. 01Querying data with SELECT
  2. 02Filtering with WHERE
  3. 03Sorting and DISTINCT
  4. 04Counting and grouping
  5. 05Joining tables with JOIN
  6. 06Subqueries, CASE and WITH
  7. 07INSERT, UPDATE and DELETE
  8. 08Window functions
Start with SQL

The first modules are free

Excel8 modules · 50 lessons

Learn Excel by playing

Real formulas in a spreadsheet that recalculates as you type. From your first sum to lookups and pivot tables.

What you learn

  1. 01Formulas and SUM
  2. 02Functions and absolute references
  3. 03Logica
  4. 04Voorwaardelijk tellen en optellen
  5. 05Opzoeken
  6. 06Tekst en datums
  7. 07Data analyseren
  8. 08Dynamische matrices
  9. More modules coming
Start with ExcelTry three formulas first

The first modules are free

Who it's for

For everyone who works with data, or wants to

From your first query to your next job interview: pick what fits you.

Learning by doing

You learn a skill by using it

Why doing it yourself works

Most people only really learn SQL or Excel after using it at work for a while. That takes years. Lurndo puts that practice into short lessons: you write the query or formula yourself, get feedback straight away and repeat until it sticks. One idea at a time, so you practise enough before moving on.

For your career

Jobs in finance, marketing, logistics, HR, data and IT often ask for SQL or Excel, and more and more applications include a practical test. If you can get and shape data with ease, you work faster and become hard to replace. After the full SQL course you get a certificate employers can check.

Online, no installation

Everything runs in your browser: a real SQL database and a spreadsheet that recalculates as you type. There's nothing to install and you can start straight away, on your laptop or your phone. Your progress is saved, and with an account you carry on on any device.

For beginners and experienced users

Never written a query or formula? Then you start with the question of what a table is. Already know the basics? Carry on with joins, subqueries, window functions and references. With daily challenges, bosses and speedruns there's always something left to learn.

Start today, for free

The first modules of every course are free, and you don't need an account. You type your first query within a minute.

Start with SQLStart with Excel