Installing fonts can be a fun way to personalize your projects! Generally, you'll need to download the font file, which is often in a .ttf or .otf format. For Windows, you right-click on the file and choose "Install," while on Mac, you double-click and then hit "Install Font." What kind of fonts are you looking to install, and for what purpose? It's always exciting to see how different fonts can change the feel of a document or project!