Knowledge that generates results
Practical guides created by a senior engineer with 10+ years in distributed systems, AI, and e-commerce. No fluff — only what works.
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🆓 Free — AI Cheatsheet 2026
Top 10 AI tools for devs in 2026 — free download, no credit card required.
AI Toolkit 2026
The complete AI stack for tech professionals — by budget
Stop wasting time testing random AI tools. This guide gives you the exact stack used by senior engineers and tech managers — organized by budget (free, $10–50/month, $100+/month) — with real workflows, proven prompts, and ROI estimates per tool.
- 50+ curated AI tools, tested and ranked
- 3 budget tiers: Free / $10–50 / $100+/mo
- Ready-to-use prompts for dev, writing & design
- n8n workflow templates for automation
- AI for code review, docs, and architecture
- ROI calculator: time saved per tool
- Lifetime access + free updates
Physical to Digital
How to digitize your business or add a new revenue stream with e-commerce
The no-BS guide for business owners and engineers who want to take a physical store online — or add a digital revenue channel alongside the physical one. Built around Shopify, with real migration playbooks, automation stacks, and the exact steps to go live in 30 days.
- Shopify vs WooCommerce vs NuvemShop — decision framework
- Physical-to-digital migration checklist (40 items)
- Omnichannel setup: sell physical + digital simultaneously
- Inventory, payments & logistics automation
- SEO from day 1: keyword research for your niche
- Real Brazilian case studies with revenue data
- Lifetime access + free updates
Complete Bundle
AI Toolkit + Physical to Digital — best value
Get both guides at a 28% discount. Build your AI stack AND your digital business simultaneously.
- Everything in AI Toolkit 2026
- Everything in Physical to Digital
- Priority email support for 30 days
Created by
Antonio Ferreira
Computer Engineer & Tech Manager · 10+ years
"These guides are distillations of what I learned day by day — building distributed systems, leading teams, and helping companies scale with technology."