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
Claude for work / Microsoft 365 light
A light tour of Claude for work and Microsoft 365: personal Pro versus Team or Enterprise, connectors and write-tool consent, and a safe policy-redact-draft-verify-human-send loop. Not an admin…
Your first table contract
One page that records grain, keys, ownership, columns, exclusions, and allowed use so multiplayer tables stay trustworthy.
Privacy, public platforms, and work caution
Using Grok on X means your coding questions and technical prompts are bound directly to your public social media profile. Learn how to navigate the X data sharing…
Voice, images, and files for everyday tasks
Part 6 of Learn ChatGPT. Voice, images, and files turn everyday work into multimodal chats, with study mode and limited free deep research when available. You leave with…
Exporting cleanly into SQL or a warehouse
UTF-8 CSVs, honest types, ISO dates, no totals rows, and a handoff note so pipelines and people load what you meant to ship.
Memory, privacy, and what never to paste
Chat history, memory, and project files are three different things. Part 6 of Learn Claude from scratch covers privacy settings, a paste ladder for what never goes into…
Voice and everyday multimodal capabilities
Master multimodal AI features. Learn how to process images, extract structured data from photos, generate custom visuals using Flux models, and integrate real-time search feeds into your everyday…
Memory, custom instructions, and Projects
Part 5 of Learn ChatGPT. Custom instructions set standing prefs, memory can stick facts you can edit, Projects scope chats and files, and scheduled tasks appear on some…
Cleaning before you analyze (Sheets edition)
A practical Sheets cleaning pass: trim, dates, splits, nulls, and deduping only after grain is clear. Keep raw copies; log your steps.
Writing, summarizing, studying, planning
Claude is strong at four everyday jobs: writing, summarizing, studying, and planning. Part 5 of Learn Claude from scratch shows a simple prompt pattern and worked examples you…
Strengths, limits, and personality without mythology
Understand the true capabilities and limitations of Grok. We break down the differences between Fun Mode and Regular Mode, explore how it ingests live X data, and map…
Desktop app: Chat, Work, and Codex in one place
Part 4 of Learn ChatGPT from scratch. How the desktop app puts Chat, Work, and Codex in one place, what Free still limits, and how to pick a…











