Tooltips provide additional information when a cursor hovers over an element, and Tippy.js is a lightweight library that facilitates the integration of tooltips and other interactive elements in applications. Tippyjs-react is specifically designed for React projects, allowing developers to add tooltips, popovers, and dropdown menus with ease. This guide demonstrates how to use Tippy.js in a React project by walking through the process of installing necessary software, importing Tippy components, and applying tooltips to elements such as a Submit button in a newsletter request form. The tutorial covers positioning tooltips using the placement attribute, customizing them with HTML and CSS, and adjusting their behavior by modifying attributes such as arrow and delay. This flexibility ensures tooltips do not obstruct important elements and can enhance user interactions. The tutorial also includes additional resources for further exploration of Tippy.js in React, and suggests using LogRocket for tracking and improving digital experiences in React applications.