What sunmarirs covers
All material below is free to read and provided strictly for general informational and educational purposes. Nothing here is a paid product, a course with enrolment, or a substitute for professional financial or legal advice.
Seven areas, one continuous reading path
Funding rounds
Pre-seed, seed, Series A–D: what changes at each stage, typical instruments used, and how ownership shifts round over round.
Cap tables & dilution
How a capitalisation table is built, what dilution means in practice, and how option pools affect founder ownership.
Unit economics
CAC, LTV, payback period and contribution margin — how to read them together rather than in isolation.
Burn rate & runway
Gross and net burn, the burn multiple, and how runway planning changes as a company scales.
Growth accounting
Cohort retention, expansion revenue and the difference between compounding growth and one-off spikes.
Valuation basics
Common approaches to early-stage valuation and why they diverge so widely from public-market methods.
Read in order, or jump to what you need
Each subject area is written to stand on its own, with plain-language definitions first and worked, numeric examples afterward. We link related terms as they come up rather than requiring a fixed course sequence.
Material is reviewed periodically and updated when terminology, typical deal structures, or market benchmarks shift.
Content last reviewed: 22 June 2026What this resource is — and isn't
What sunmarirs offers
Free, written explanations of startup economics concepts, kept in plain language and periodically reviewed for accuracy.
What sunmarirs does not offer
Paid courses, one-to-one advisory, investment recommendations, or any product or service purchasable through this site.
Nothing on this page constitutes financial, investment, legal, tax or business advice. Always consult a qualified professional before making decisions about your company's finances. See our Terms of Service.