Once organic (Module 7 SEO) and email (Module 9) channels are working, paid traffic (Meta Ads, TikTok Ads) can accelerate growth — but should be funded from actual profit, not started capital, given how easily ad spend can outpace a beginner’s budget.

A simple, disciplined reinvestment ladder:

1. Reinvest the first several profitable weeks’ profit entirely back into a small, controlled ad test budget (not your whole margin) rather than withdrawing it.
2. Test with a strict daily cap and a clear kill criteria decided before you launch the ad (e.g. “pause if cost-per-purchase exceeds $X after $Y total spend”) — deciding this after seeing disappointing numbers leads to emotional, not rational, decisions.
3. Only scale ad spend once a campaign is consistently profitable at a small budget — scaling a losing campaign faster just loses money faster.

Paid ads are a full discipline in their own right and deserve dedicated study beyond this overview — the goal here is simply to place them correctly in your growth sequence: after validation, after SEO/email foundations, funded by real profit.