August 25, 2026
SQL foundations
The single highest-leverage skill in this field. Joins, aggregation and window functions, in that order.
ReadLevel: Beginner
August 25, 2026
Cloud & DevOps
Linux, AWS, containers, infrastructure as code and the observability that tells you whether any of it is working. Built around one service you take all the way to production.
ReadAugust 25, 2026
Linux and networking
The shell, the filesystem, processes and the network stack. Every layer above this is an abstraction over these, and every outage eventually drops you back down to them.
ReadAugust 25, 2026
Career Readiness
Portfolio craft, technical communication, interview preparation and how to judge a role honestly — the layer between having the skills and being hired for them.
ReadAugust 25, 2026
A portfolio somebody will actually read
Three projects explained well beats twelve repositories with default READMEs. The explanation is the artefact.
ReadAugust 25, 2026
A resume that survives the scan
One page, evidence per line, and no adjective you cannot substantiate. It gets about six seconds of attention.
ReadAugust 25, 2026
Behavioural interviews
The half most technical candidates neglect, and the half that decides between two people who both passed the coding round.
ReadAugust 25, 2026
Product fundamentals
The craft AI sits on top of. A PM who cannot frame a problem does not become useful by adding a model to it.
ReadAugust 25, 2026
AI Foundations
From the maths underneath to a retrieval-augmented app you understand end to end. Beginner through expert, with the papers when you are ready for them.
ReadAugust 25, 2026
The maths you actually need
Linear algebra, calculus and probability — only the parts that recur. Skip nothing here and everything downstream gets easier.
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