For personal use, all my fonts are free to download.
In short, personal use means private use within a family or friends context or student projects, with no income of any sort.
Please read the terms of personal use before any download and installation.
Except for fonts labelled as '100% free', any use of a font outside of a private use requires a commercial license specific to the use.
A commercial license is required for any use of a font involved in a product, service, advertising, branding, etc, with the aim of profit, directly or indirectly.
If you are a company or a freelancer, a commercial license is required for using the font.
Check out here the different commercial licenses available.