The AI Skills Knowledge Hub

Stripe processes payments; Paddle becomes the legal seller. For a solo founder selling digital products across borders, that distinction decides who handles VAT, GST, refunds, and chargebacks — you or them.

You created a Stripe account, sent a payment link, and hit 'your account cannot currently make live charges.' Here's what actually activates live mode — and the shortest path from zero to a real first dollar.

Digital Applied found 86% of AI citations come from sites with 5+ interlinked pieces on one topic. Yext found a bidirectionally-linked cluster gets cited 2.7x more than an isolated page. AI crawlers read internal links as a map — here's how to structure content as one knowledge node.

Schema markup alone does nothing — Ahrefs tested 1,885 pages and adding it with no content change produced no citation lift. But Organization and FAQPage JSON-LD on top of real content earn 2.7x more AI citations. Here's the code and the deployment checklist.

Reddit is Perplexity's #1 source at 46.7% of top citations and #1 in Google AI Overviews at 21%. One genuinely useful 30-minute answer keeps getting pulled into AI responses indefinitely. Here's the minimal-effort playbook — and why this window won't stay open.

AI engines trust what others say about you far more than what you say about yourself. Muck Rack found 82% of AI citations come from earned media, under 6% from brand-owned pages. The real work of GEO isn't polishing your copy — it's getting mentioned elsewhere.

Search just split into two paths: the ranked blue-link list and the AI-generated answer that quotes a few sources nobody clicks. SEO races for rank; GEO races to be the source the AI draws from. Here's why the distinction reorders how solo founders get found.

Most 'form a US LLC' guides stop at the EIN. The part they skip can cost $25,000: Form 5472, required annually from foreign-owned LLCs even at zero revenue. Plus the BOI rule that changed in 2025 and the state report you still owe.

No SSN? You can still get an EIN by phone or fax — the widely-repeated claim that the IRS killed the fax channel is wrong. Here's the SS-4 prep that keeps you from getting rejected: Line 7b, Line 11, Line 15, and the Responsible Party rule.

Why an LLC beats a C-Corp for most solo founders, and which state to form in. Wyoming's $60-a-year default, Delaware's investor pull, and California's $800 franchise-tax trap — plus the registered-agent requirement nobody explains until you're stuck.

The real payoff of a personal mesh VPN: run an AI coding agent on a home machine and drive it from your phone while the task keeps running. Here's the latency math, the security details that matter, and the one hard limit to plan around.

Tailscale turns every device you own into one private network — no public IP, no firewall rules, no forwarded ports. Here's the connection model that makes it work, and the one thing that quietly leaves you stuck on relay latency.

A concrete 6-step path from empty folder to a live email-capture page — frontend, backend, and database — deployed worldwide on Cloudflare for $0, before a single line of the real product exists. The fastest way to test if anyone wants the thing.

Cloudflare Workers and Pages replace 'rent a VPS and configure nginx' with 'push code, it runs in 335 cities.' Here's why serverless-at-the-edge is a different model, where the free tier ceiling actually sits, and how Pages and Workers are the same primitive.

Oracle's free tier has one real string attached: it reclaims idle instances. Here's what 'idle' actually means for a dev box, the keep-alive pattern that works, why community scripts are a fragile bet, and the fix that ends the problem for good.

Oracle Cloud quietly gives away a permanent 4-core, 24GB-RAM ARM server that would cost $80-100/month on AWS. Here's why signups get rejected, the region choice you can't undo, and how to actually get the machine.

The four-piece kit a non-resident founder needs before a US bank says yes: ITIN, a CMRA-clean address, a US SIM, and a Wise account, plus the card application.

What an ITIN is, why a Certifying Acceptance Agent beats mailing your passport to the IRS, the 8-12 week timeline, and why it's the first US-entity domino.

Why GitHub Pages beats Vercel, Netlify, and a VPS for a solo founder's first landing page: zero cost, no third-party login, and the deploy is a git push.

Registrar tradeoffs, why to route DNS through Cloudflare, the DNSSEC gotcha that takes domains offline, and the orange-vs-grey cloud rule for GitHub Pages.

Eligibility, verification, cost, data privacy, and what happens if you change schools — the practical FAQ for ChatGPT for Teachers, and a look back at the series.

ChatGPT for Teachers is free only through June 2027. OpenAI hasn't said what comes next. Here's what's known, what's speculation, and what to plan for regardless.

ChatGPT for Teachers is a teacher-and-staff offer, not a student one — and several big districts ban student ChatGPT outright. Untangling the confusion.

ChatGPT, Claude, Gemini, or Copilot for your district AI pilot? A practical framework built on the stack you already run, real per-seat prices, and priorities.