Category: Tutorials
You are in the right place if you want a lesson you can follow, not a glossary and not a product homepage. This shelf holds most of the articles on Analytics Made Simple. Two paths sit inside it on purpose. SQL is the database path: you have rows, and you need to ask a question without exporting another spreadsheet. AI is the tool path: chat products, open-weight models, and the jobs those tools are actually good at. Other tutorials land here when they teach a skill that does not belong on a narrower shelf.
A category page is the pile. A series page is the path, with a place to start and an order. If you open a tag or page 2 of this list, you are in a filing cabinet. The lesson is the article, or the series hub that lines the articles up.
Where to start: if the pain is a table, open the SQL series and use the first part on that page. If the pain is a model name or a chat tool, open the AI category and pick the product you already have on screen. If you are not sure which job you have, open Learn and choose the track that matches the work, not the logo.
Common chart crimes (and fixes)
Spot and fix common chart crimes: pie overload, 3D distortion, truncated axes, dual-axis tricks, rainbow heatmaps, and wrong chart types. Clear encoding beats decoration.
Experiment review meetings that decide
Run experiment reviews that decide: ship, iterate, stop, or gather one named fact. Use a short agenda, a one-page pre-read, clear roles, and a written decision log.
Environments: dev, stage, and prod
Laptop truth is not production truth. Learn what dev, stage, and prod mean for data work, a simple promotion path from notebook to trusted table, secrets hygiene, and…
Gaming, Goodhart, and unintended incentives
Goodhart’s law: when a measure becomes a target, it stops being a good measure. Pair KPIs with incentives, audit gaming paths, and prefer metrics that are hard to…
The annotation habit
Treat titles, callouts, reference lines, a so-what line, and footnotes as part of the chart. Annotation turns a clean picture into a decision aid without lying.
