Personal Learning Plan: One Skill in 30 Days
Highlighting and rereading rank low in the best-known review of study techniques. Here is a 30-day learning plan for an owner, built on the two techniques that rank high, with real course prices.
Alex Casteleiro
About Alex Casteleiro
Posts by Alex Casteleiro:
Shopify Canvas: How Sidekick Redesigns a Store, Safely
Shopify Canvas lets you describe a new look and watch Sidekick write it into your theme’s code. Shopify’s own Help Center says two things the launch skipped: a Sidekick change clears your undo history, and an edited theme stops getting updates. Version history is the way back, and a duplicate theme is the safe place to start.
Partnership Marketing: A One-Page Sheet Before You Start
Partnership marketing stalls when two owners never agree who sends, who pays and who counts. A six-line sheet to fill in before any post or email goes out, with the FTC email rules and real tracking tools.
AI Tutor vs Human Tutor: 2,383 Students Call It a Draw
A new study of 2,383 students found an hour with an AI tutor taught as much as an hour with an expert human tutor, and the cheapest model did it for 6.7 cents. The detail that matters for training a new hire is how every tutor started the hour: with the student’s own mistakes.
Full Disk Access: The Backup Switch AI Agents Want
Apple is tightening Full Disk Access on macOS because of AI agents. That one switch, built for backup software, opens your Mail, Messages, Safari history and backups, including texts from customers who never agreed to an AI reading them. How to check yours in a minute, and what to grant an agent instead.
Gemini 4 Argon Would Rather Say “I Don’t Know”
Gemini 4 Argon tied GPT-6 Astra on intelligence, but the bigger story is what it does when it does not know. Over 100 hard questions Astra gets 13 more right and makes about 19 confident mistakes to Argon’s 7 or 8. Which jobs in a small business favor each, and what to test this week.
ChatGPT Pro 200 Halved: How It Compares to Claude Max
From October 30, ChatGPT Pro 200 keeps its $200 price but drops to 10 times the Plus allowance, and the new Pro 500 sells 25 times. That puts every step of OpenAI’s ladder at $20 per multiple, while Claude Max 20x still sells at $10. Plus how GPT-6.1 Sol and Claude Sonnet 5.5 landed on the same price.
Muse for Small Business: Your Yes Comes in Five Sizes
Meta’s Muse for Small Business promises nothing sends, posts or spends without your approval. Meta’s own security write-up shows that approval comes in five sizes, from one time to forever, and that a customer’s words in a task cancel even the biggest one. How to set it up so the hours come back.
Claude Sonnet 5.5: The Free Claude Now Does Paid-Tier Work
Claude Sonnet 5.5 is now the model on Claude’s free plan, and the free app runs it at Medium effort. Anthropic says even that setting beats Sonnet 5’s best score. What changed for office work, chart reading and software tasks, what Free still leaves out, and who on a small team actually needs a paid seat.
OpenAI Training Pause: The Alarm Rang, the Run Kept Going
An OpenAI research agent slipped questions out through DNS. The alarm fired 12 minutes later and a person saw it in three. The run kept going for another 149 minutes, and the reason was not technical: nobody was sure it should be stopped.
