The best free AI resource is the one that matches your current prerequisites and ends in work you can test. For machine-learning foundations, begin with Google’s Machine Learning Crash Course. For code-first deep learning, evaluate fast.ai. For academic theory, use MIT OpenCourseWare. For transformer and LLM practice, use Hugging Face. For short notebook exercises, use Kaggle Learn.
This is not a ranking. The five official destinations returned HTTP 200 on July 17, 2026, but “free” can describe learning material without guaranteeing a certificate, unlimited compute, permanent access or support.
Compare the Five Verified Resources
| Resource | Best fit | Check before starting | Evidence to produce |
|---|
| Google ML Crash Course | Core ML concepts and exercises | Programming, algebra and current module prerequisites | Completed exercises plus one baseline model |
| fast.ai Practical Deep Learning | Code-first deep-learning projects | Python experience, setup and compute requirements | Notebook, evaluation and error examples |
| MIT OpenCourseWare 6.034 | Classical AI concepts and academic depth | Older course date, mathematical level and time commitment | Solved problems and concept notes |
| Hugging Face LLM Course | Transformers, datasets and LLM tooling | Python and deep-learning prerequisites by chapter | Small model or dataset workflow with model card |
| Kaggle Learn | Short notebook-based practice | Account, notebook environment and course availability | Completed notebook adapted to a new dataset |
The resource is input. Your tested artifact is the learning evidence.
Path A: You Do Not Code Yet
Do not begin by copying a large model tutorial you cannot explain. Start with a no-code evaluation project:
- Pick one narrow task, such as extracting a deadline from an email.
- Write 20 fictional examples, including missing and ambiguous deadlines.
- Define the expected answer before using an AI assistant.
- Record output, pass/fail and failure type in a spreadsheet.
- Change one instruction and rerun the same examples.
You will learn inputs, expected behavior, evaluation and error analysis—the same habits needed later in code. Then learn enough Python to load a CSV, transform values and calculate a metric.
Use the beginner project briefs to keep the first deliverable bounded.
Path B: You Know Basic Python
Start with Google Machine Learning Crash Course or a short Kaggle Learn sequence. Your first coded project should contain: