The document provides tips for using fonts effectively in designs. It discusses using typographic hierarchy with larger fonts for titles and smaller fonts for body text. It also recommends using high contrast between fonts for titles and subtitles through different styles, sizes, and weights. Additional tips include using sans serif fonts for readability, bold fonts to emphasize words, and pairing fonts that complement each other through variations in weight, style, and shape. The document emphasizes keeping font usage simple with a maximum of three fonts per design.