Angel Investing 101: A 5-Day Beginner Guide to Startup Investing
Originally sent as part of Play Money’s new member onboarding.
When new investors join Play Money, we walk them through a short five-day crash course in angel investing.
The goal is simple: help you get comfortable lurking, learning, and eventually investing in early-stage startups.
Angel investing has its own language and mental models. Terms like SAFE notes, SPVs, valuation caps, and portfolio construction can feel confusing at first.
So this guide breaks the basics down into five short lessons.
If you're new to angel investing, start here.
— C2K
What Is Angel Investing?
Before we begin with each day of the onboarding campaign, let's start with the very first definition you need to know - angel investing. Angel investing is when individuals invest their own money into early-stage startups in exchange for equity. Unlike venture capital funds, angel investors typically write smaller checks and often invest before institutional investors enter the round.
Angel investing is high risk, but diversified portfolios of startup investments can generate significant long-term returns.
Day 1: The #1 Rule of Angel Investing
Our goal: get you comfortable lurking and learning on Play Money — and maybe writing your first check.
Why Angel Investing?
First check calls game.
Angels determine what problems get solved and who gets to solve them.
And if it works out, we get:
- The excitement of learning new industries
- The rush of collective action funding the future
- The thrill of riding alongside a fearless founder
And of course… bragging rights for life if we end up with the next big IPO. 🤑
The #1 Thing You Need to Know About Angel Investing
Angel investing is a long-term game.
Your money is likely tied up for 7–10 years.
And most startups fail.
If you only make a handful of high-dollar bets, you’re likely to lose your money. It’s like buying a lottery ticket — and waiting a decade for the drawing.
Yes, we just said that.
But Here’s the Important Part
If you make a whole bunch of smaller bets, something interesting happens.
Those individual lottery tickets begin to look more like a high-performing asset class.
Why?
Because diversification works.
Think about public markets.
What’s the smartest way to invest?
Index funds.
The same logic applies to startups.
With angel investing, diversification starts to work around ~30 investments.
That’s why we built Play Money.
Think of it as the easy button for building your own startup index fund.
Day 2: What Is a SAFE Note?
Founders raise money for startups by selling a share of their company (equity).
But selling equity requires legal work, which takes time and money — two things early startups rarely have.
So the early-stage ecosystem developed a faster structure:
SAFE stands for:
Simple Agreement for Future Equity
The name tells you exactly what it does.
You invest now and receive equity later.
Two Common Terms in SAFE Notes
The price of that future equity is usually defined using one or both of these:
Valuation Cap
The maximum valuation you’ll pay when the SAFE converts to equity.
Example:
$1M invested on a $10M post-money SAFE means you effectively purchased 10% of the company.
Discount
The SAFE investor receives equity at a discounted price compared to later investors.
Example:
If the SAFE has a 20% discount and the company later raises at a $15M valuation, your investment converts as if you invested at $12M.
Which One Applies?
If a SAFE includes both a cap and a discount, you receive whichever gives you the better price.
This rewards early investors.
In the examples above, the $10M valuation cap wins.
SAFE notes convert into equity when:
- A company raises a priced round
- A company is acquired
What’s the “right” valuation cap or discount?
That’s a much longer conversation.
But over time, as you lurk and learn, you’ll start to develop your own angel style.
Day 3: What Is an SPV in Angel Investing?
SPVs are amazing.
They’re also extremely boring.
SPV stands for Special Purpose Vehicle.
In practice, it’s simply a Delaware LLC created to invest in one startup.
Think of it as a mini investment fund that only owns a single company.
Why Startups Use SPVs
Startups want a clean cap table.
Instead of adding dozens of small investors individually, SPVs allow founders to:
- Combine many investors
- Appear as one entry on the cap table
- Reduce legal and administrative costs
Why SPVs Are Good for Angels
SPVs allow smaller angels to invest.
Typically anyone investing below $25K–$50K participates through an SPV.
When you invest through platforms like:
- Play Money
- AngelList
- Sydecar
- Wefunder
You’re usually investing through an SPV.
That’s why the documents you sign are subscription agreements, not the startup’s SAFE itself.
What the SPV Manager Does
The SPV manager handles the administrative work:
- Signs the SAFE with the startup
- Sends K-1 tax documents
- Distributes returns if the investment succeeds
Extremely boring.
But very useful.
Day 4: Essential Angel Investing Terms Every Beginner Should Know
By now we’ve covered:
- SAFE Notes
- Valuation Caps
- Discounts
- Priced Equity
- Liquidity Events
- SPVs
But angel investing has a lot of vocabulary.
Here are a few more useful terms.
MRR / ARR
Monthly Recurring Revenue and Annual Recurring Revenue.
These measure subscription revenue and are key metrics for SaaS companies.
MVP
Minimum Viable Product
A version of a product with just enough features to test early demand and gather feedback.
Product Market Fit (PMF)
The moment when a product resonates strongly with users.
A common benchmark:
More than 40% of users would be very disappointed if the product disappeared.
Startup Funding Stages
Pre-Seed
Idea or MVP stage with little revenue.
Seed
Early traction but still refining product market fit.
Series A
Clear product market fit and revenue growth.
SPV Fees
SPVs have operational costs.
Legal filings and ongoing administration can last 10+ years.
These costs are typically deducted from the investment amount.
Example:
Invest $1,000
$100 fees
$900 goes to the startup.
Carried Interest
Often called “carry.”
Typically 20% of profits paid to the investment manager organizing the deal.
Investors receive:
- Their original investment
- 80% of the profits
The manager receives 20%.
Portfolio Companies (Portcos)
Startup slang for the companies you’ve invested in.
We use the term constantly.
And honestly, we can’t wait for it to die. 😬
Cap Table
Short for Capitalization Table.
This is the official list of company shareholders.
If you invest through an SPV, you appear on the SPV cap table, not the startup’s cap table.
The SPV itself appears as the investor.
Bonus Resources
Our favorite terminology guide:
- Play Money’s Angel Investing Terms Explained for Beginners
Someone recently asked if I have an angel investing regret.
I do.
And it’s related to the terms above.
Day 5: How to Make Your First Angel Investment
There is no magic formula for picking the perfect startup.
Especially if you are investing from a pool of credible, well-vetted opportunities.
Your angel style develops over time.
And that’s completely normal.
The Only Real Rule: Shots on Goal
Angel investing works best when you spread your bets.
Divide your investment budget over 2–5 years.
Aim for 30+ investments.
This creates a diversified startup portfolio.
There is absolutely no shame in writing small checks to make this happen.
Small checks matter to founders.
And small investors often become the most helpful ones.
We bring:
- Expertise
- Connections
- Amplification
- Community
to the cap table.
The Best Way to Learn
Sometimes the best way to learn is simply to start.
Write your first check.
Or spend some time lurking and learning.
Both approaches are perfectly valid.
At the end of the day:
💥 Your money. Your rules. Do you. 💥
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Play Money makes angel investing accessible by helping everyday angels build diversified startup portfolios without turning it into a full-time job.
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