This is not the most popular view among designers, but I’m totally in favor of using free fonts, especially as a beginning designer.
But free fonts get a bad wrap. Mention them to many experienced designers, and they’ll complain that free fonts have poor quality, bad kerning, and missing features.
You know what? Those stereotypes are a little out of date. The truth is: you can find extremely high-quality free fonts. But sometimes you need to do a lot of research to find them.