Web foundations: HTML & CSS
Build and style your first web pages from scratch.
Lessons and exam hosted on Yanjye
See the syllabusFree learning tracks
Work through a curated path at your own pace, pass the exam, and get a verifiable certificate you can add to LinkedIn — free.
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JavaScript basics
Make web pages interactive with real programming.
Lessons and exam hosted on Yanjye
See the syllabusSQL & databases
Query, filter and join data with confidence.
Lessons and exam hosted on Yanjye
See the syllabusData science from zero (no IT background)
Start with no computer background and finish able to read real data with Python.
Lessons and exam hosted on Yanjye
See the syllabusPython data analysis with pandas
Load, clean, group, join and chart real datasets with pandas.
Lessons and exam hosted on Yanjye
See the syllabusMachine learning with Python
Build, evaluate and trust models with scikit-learn.
Lessons and exam hosted on Yanjye
See the syllabusExpert data science: production, scale and responsibility
Ship models that survive contact with reality — and with people.
Lessons and exam hosted on Yanjye
See the syllabusArtificial intelligence from zero
Understand what AI really is, use it well, and know exactly when not to trust it.
Lessons and exam hosted on Yanjye
See the syllabusBuilding AI applications with Python
Put a language model inside a real program: structured output, tools, retrieval and evals.
Lessons and exam hosted on Yanjye
See the syllabusExpert AI: architecture, training and production systems
What is under the API: transformers, training, alignment, serving, evaluation and governance.
Lessons and exam hosted on Yanjye
See the syllabusDevOps from zero
Start with no server experience and finish able to run, deploy and debug a real application.
Lessons and exam hosted on Yanjye
See the syllabusDocker and CI/CD
Package an application so it runs the same everywhere, then automate the whole path to production.
Lessons and exam hosted on Yanjye
See the syllabusExpert DevOps: scale, reliability and security
Run systems other people depend on — orchestration, observability, incidents, security and cost.
Lessons and exam hosted on Yanjye
See the syllabusHow the certificate works
1
Read every lesson
Lessons are written and hosted here on Yanjye. Your reading time is recorded so progress is genuine.
2
Pass the exam
Yanjye's own questions, shuffled every sitting. You need 70% or more.
3
Prove you are human
A robot check plus timing and focus checks — so the certificate actually means something.
4
Share it
Add it to your LinkedIn profile in one click. Anyone can verify the serial on our site.