There are six universal principals of influence that research has shown to be incredibly powerful and effective in a wide variety of settings. 1. Reciprocation…

“There is virtually no other skill that can make you as much money as copywriting. Nearly all internet millionaires know this secret: more than their…

The Kelly Criterion is a formula that can be used to determine how much of your bankroll you should stake on a bet when the…

In finance and economics, the Capital Asset Pricing Model (CAPM) is used to calculate the expected return of a stock based on the risk-free rate,…

A sinking fund is a fund formed by setting aside a certain amount of money periodically so that you have enough to pay for some…

This calculator finds your monthly rent budget based on your monthly income (after tax) and how much of your monthly income you’d like to spend…

This calculator finds the present value of an annuity based on the yearly payment amount, the annual interest rate, and the number of years the…

The compounded annual growth rate of an investment, often abbreviated CAGR, is the average rate at which an investment grows over a certain period of…

Headlines are everything. Nobody will read your copy if you can’t reel them in with a headline. Results of some A/B tests that have been…

The present value interest factor of annuity, often written as PVIFA, can be found using the following formula: PVIFA = [1 – (1+r)-n] / r…