Sparkfile

Start Here

Start where you are.

Not sure what to build yet? Start with the idea filter — it tells you which idea is worth your time before you spend a month on the wrong one. Already picked the thing? The 90-day roadmap hires you a team of AI cofounders to run it. Either way, it's Claude alone.

Still choosing what to build?

Start with the idea filter — it kills the ideas that won't work before you build them.

This is Week 0: pick the idea worth building, then come back and hire the team to run it.

Run your idea through the filter, free →

New to Claude

Start here if you’re not yet using Claude day to day.

This path is Foundations: the shared ground every role is built on, before you hire any of them.

  1. Claude vs. ChatGPT: one practical question, not a benchmark warCOMPARISON · 3 min
  2. Free vs. paid Claude: what's actually worth paying forCOMPARISON · 3 min
  3. How to write a prompt that actually worksEXPLAINER · 4 min
  4. Reading your first Claude Code diffEXPLAINER · 3 min
  5. The terminal commands a founder actually needsEXPLAINER · 3 min
  6. What is a context window, and why your memory files fit inside itEXPLAINER · 3 min
  7. What is a memory file, and why every operator should keep oneEXPLAINER · 4 min
  8. What is an LLM, in terms that actually matter to a founderEXPLAINER · 3 min
  9. What is Claude Code, in plain founder EnglishEXPLAINER · 3 min
  10. What is Cowork, and what founders actually use it forEXPLAINER · 3 min
  11. What is inference (and why it's the only part you actually touch)EXPLAINER · 2 min
  12. Your first 30 minutes with Claude CodeEXPLAINER · 5 min
  13. Then: start the 90-day roadmap →

New to building

Start here if you use Claude but haven't pointed it at your product yet.

This path feeds the Ops role — the cofounder that turns a yes into a shipped thing.

  1. A changelog that writes itself from git historyWORKFLOW · 20 min
  2. Claude Code vs. Cursor for a non-engineer founderCOMPARISON · 4 min
  3. Use Claude Code to fix the bug you can't findWORKFLOW · 30 min
  4. Draft your product roadmap from a pile of Notion notesWORKFLOW · 25 min
  5. Ship a waitlist in an afternoonWORKFLOW · 3 hours
  6. Ship a landing page with Claude Code without knowing how to codeWORKFLOW · 45 min
  7. Spec-first building: why you write the doc before the codeEXPLAINER · 3 min
  8. Wire up Stripe with Claude CodeWORKFLOW · 2-3 hours
  9. Then: start the 90-day roadmap →

Just show me the playbooks

Skip the theory — go straight to copyable prompts.

A playbook is what a cofounder runs. Each one is tagged Growth, Ops, or Brand; filter by role once you're there.

  1. Build a creator pipeline, not a one-off gigBUILD · Getting Customers
  2. Capture demand already searching for a competitorHANDS-ON · Getting Customers
  3. Find the agency layer in your marketHANDS-ON · Getting Customers
  4. See all playbooks →
  5. Then: start the 90-day roadmap →

Ready for the 90-day roadmap

You don't need the reading list. This is the flagship.

Before you start, grab the free Starter Kit. It's the shared brief the whole team reads (PRODUCT, USERS, GOALS), plus the VOICE.md the Brand cofounder starts from.

Start the roadmap →