ModulusBuild modern IT skills, one hands-on lesson at a time.
Practical courses on Excel, AI, machine learning and LLM engineering. Read a short lesson, try it live in a real workspace, get instant feedback. No long videos.
Free to start · No credit card required
Pick a track and start learning
Every course is free and self-paced. Switch between tracks anytime.
Excel Mastery — zero to dashboard hero
From cells & formatting through PivotTables, Power Query, and full dashboards. Hands-on in a real spreadsheet.
AI Fundamentals for working professionals
What AI actually is, how to use it well, and where it breaks. Practical, jargon-light.
Machine Learning foundations
Foundations to evaluation. Linear · logistic · decision trees · random forests · KNN.
LLM Engineering — ship production AI features
Prompting, RAG, agents, evals. End-to-end skills for building with large language models.
Mandarin Chinese — pinyin to fluency
Tones, characters, grammar and conversation. Aligned with HSK levels 1 through 6, paced for adults.
Active learning beats passive watching.
Every Modulus Learn lesson is built around doing — not just reading or watching.
Read a short lesson
5–10 minutes of focused content. Zero filler, zero fluff.
Try it in a real workspace
Each lesson opens an interactive spreadsheet, notebook or playground.
Get instant feedback
We grade your work automatically and explain what to fix.
Track your progress
XP, streaks, and a verifiable certificate when you finish a track.
Why learners choose Modulus Learn
Built for working adults
15-minute lessons designed to fit a coffee break. Pick up exactly where you left off, on any device.
Real tools, in your browser
A live spreadsheet engine, real Python notebooks, real LLM playgrounds. Nothing to install, no setup tax.
Auto-graded, not auto-played
We check your work and give specific feedback — the same way a good instructor would.
Free to start. Always.
Sign up with your email and unlock every course. No credit card. No premium-tier upsell halfway through.
Create your free accountMagic-link sign in — no passwords to remember.