Long

Where it is explained in full

Workplace plans: the 401(k), the 403(b), and the TSP, from the first paycheck to the last. Everything a person needs to open one, fill it, hold the right things in it, avoid the traps, and carry it with them when they leave. Long on purpose, so that one page is enough.

Unit economics: does one sale make money before you count the rent. What a customer costs to win, what they pay, how long they stay, and how long until they have paid you back. Simple framework, and most of the mistakes come from what people leave out of each number.

Wealth, and what it looks like on the way out the door. Wealthy and rich are not two kinds of people. They are two moments in the life of the same money, and which one you are in depends on what you just did with it.

Compounding, and why the early years look boring. Growth on growth. The arithmetic is simple, the patience it asks for is not, and the usual illustrations hide a few assumptions worth naming out loud.

Roth or traditional: two jars, one tax bill. Pay the tax now or pay it later. That is the whole choice, and it turns on one number nobody knows: what your tax rate will be when you are old.

Bonds and Treasuries: lending money, with a price that moves. A bond is a loan you make. The interest is fixed, the price is not, and the relationship between the two confuses nearly everyone the first time.

A definition says what a thing is; it never says whether it fits you. The guides explain how it works and name the professional who confirms it for a particular person. The No Advice Disclosure.