18 May 20263 min read
How to become an AI engineer: a realistic six-month plan
A week-by-week path from writing your first Python function to deploying a model behind an API, with the shortcuts that do not work.
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Notes on building with AI
Tutorials, career guidance and opinions from people teaching this every week.
Latest30 Jul 2026· 2 min read
What is a correlation matrix?
In simple words, it helps you see which variables move together, which move in opposite directions, and which have almost no relationship.
Read the post →29 Apr 20262 min read
RAG is not a chatbot: the five ways retrieval systems actually fail
Most retrieval-augmented generation demos work and most production systems do not. The gap is almost never the model.
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11 Mar 20262 min read
The SQL patterns that show up in almost every data interview
Eight query shapes cover the large majority of SQL rounds. Drill these until they are boring and the round stops being a filter.
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16 Apr 20257 min read
Finding the Right Machine Learning Online Course: A Guide to the Best Online Certification Courses for Machine Learning
In today's technology-driven world, machine learning skills have become increasingly valuable across industries.
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