Step-by-step guides for SQL, tools, and practical AI — skills you can use at work. Learn by doing, not by jargon.
🎓 Core Analytics & Data Skills
The foundational curriculum: go from messy spreadsheets to confident SQL, Python, charts, and metrics you reuse everywhere.
SQL series
Step-by-step SQL — from playground setup through joins, subqueries, and optimization.
- Parts 1–4: Playground setup, SELECT, filtering, and sorting
- Parts 5–8: Grouping, aggregates, multi-table joins & subqueries
- Parts 9–14: Views, indexes, window functions, CTEs & query tuning
🤖 Everyday AI for Work & Life
Practical AI workflows for knowledge workers — prompting, memory, personal assistants, and real work tasks.
Practical AI for analytics people
A nine-part series for analysts: what AI can and cannot do, tokens, prompts, evals, RAG, agents, privacy, documentation, and a personal ops checklist.
- Parts 1–3: Capabilities, limits, token economics & prompt framing
- Parts 4–6: RAG foundations, agents, evals & structured data extraction
- Parts 7–9: Privacy boundaries, governance checklists & production ops
🛠️ Major AI Platform Masterclasses
Deep-dive operational playbooks for frontier models and developer ecosystems with official marks.
Claude
Anthropic Claude from first login through product map, Claude Code, and Cowork — one continuous path.
- Parts 1–3: Prompt caching, Projects, Artifacts & context hygiene
- Parts 4–6: Claude Code CLI tool execution, subagents & workflows
- Parts 7–10: MCP server integration, tool boundaries & developer best practices
🧠 Open-Source & AI Engineering
Run, build, fine-tune, and inspect models locally — llama.cpp, Unsloth, RAG, vector databases, and autonomous harnesses.
Fine-tuning open models with Unsloth from scratch
A comprehensive, zero-fluff engineering guide to fine-tuning open foundation models using Unsloth. Understand the mechanics of weight updates versus prompt engineering and RAG, master manual CUDA autograd kernels that deliver 5x training speedups with 80% lower VRAM, explore LoRA and QLoRA low-rank adapter mathematics, prepare high-quality Alpaca and ShareGPT instruction datasets, fine-tune Llama 3 and Qwen models on free Google Colab GPUs, and export merged adapters directly to GGUF, Ollama, and vLLM for high-throughput production serving.
- Part 1: Weight updates vs RAG & prompt engineering trade-offs
- Part 2: 5x faster custom CUDA autograd kernels with 80% less VRAM
- Part 3: LoRA / QLoRA training on Colab GPUs & GGUF production export
🏢 Data Systems, Engineering & Applied Practice
How data moves, scales, and delivers value: pipelines, dbt, Airflow, stewardship, BI, and domain analytics.
How data actually moves
A seven-part series for analysts who inherit pipelines: path, latency, storage homes, orchestration, dbt concepts, environments, and observability.
- Parts 1–2: Trace data movement, lineage & latency requirements
- Parts 3–5: Storage tiers, orchestration engines & dbt transformations
- Parts 6–7: Multi-environment deployments & proactive observability alerts
2FA, recovery, and shared family or team plans
Priya lost Claude to a 6-digit 2FA prompt she never set up, 18 hours before a client workshop, after her partner bought Pro on her Apple ID. Turn…
Grok Build tools, skills, and agent workflows
Nine MCP servers landed in the repo because another tool had them, and first run hung on a browser plugin for eleven minutes. Write house rules first, and…
Google AI Studio and API light
Google AI Studio and the Gemini API are builder doors, not the consumer chat plan. Part 4 of the Gemini product map separates wallets, sketches a safe first…
Scams, deepfakes, and too-good offers
Gloria almost sent $800 after a 22-second WhatsApp clip that sounded like her son. Everyday AI safety starts with money and trust: slow down, verify on a second…
Give context, constraints, and examples
Chris asked for a short leadership update and got a three-page vision memo. The 90-second standup needed context, constraints, and one example of the shape, because a clear…
Personal vs work accounts (and why it matters)
The email or SSO on the login is the legal person in the room. Mix a personal Gmail into a 19-row customer sheet, or a work Gemini into…
Grok Build project loop: explore, change, check
The agent rewrote 14 files after you said make the export work, and the scanner still rejected 327 rows at 8:12 a.m. Explore first, change one function, then…
Gemini CLI and Antigravity CLI (what replaced what)
Gemini CLI and Antigravity CLI are terminal agent surfaces in a mid-2026 transition. Part 3 of the Gemini product map explains what replaced what by tier, how CLI…
What an agent is (plain English)
Nora asked a work chat to clean up the Q2 folder and came back to 40 renamed files and a deleted zip she still needed. An agent is…
Talk to AI like a clear human (not magic words)
Lena asked ChatGPT for a 3-bullet standup recap at 9:12 and got a 400-word essay with a fake workshop. This part shows how to talk to any chat…
Install Grok Build and survive first run
It is 6:50 p.m. and a production clone is still sitting on the Desktop. Install Grok Build in a sandbox, log in, ask one read-only question, and make…
Building a personal AI checklist
Close Practical AI with a personal ops board: expand AI-SQL checks to charts, Python, and stakeholder email, run a fifteen-minute weekly hygiene pass, and recap Parts 1 through…











