Master one of the most essential skills for any Angular developer: reactive form validation! In this short and focused tutorial, we'll cover everything you need to know to build robust, user-friendly forms. Learn how to use Angular's built-in Validators to make fields required, check for valid email formats, and enforce minimum lengths. I'll show you step-by-step how to display clear, specific error messages to your users and how to disable the submit button until the form is perfectly valid. This is a fundamental pattern you will use in every project. ✅ What You'll Learn: How to set up a FormGroup and FormControls with FormBuilder. How to add built-in validators like , , and . The correct way to conditionally show and hide error messages in your HTML. How to check for specific errors to provide better user feedback. How to disable the submit button until the form is valid. Clean and modern SCSS to style your form and error messages. 🚀 Want to see this in a HUGE real-world app? The techniques in this video are the exact same ones I used in my complete 4-hour tutorial on building a full-stack Jira Clone! If you want to see how to integrate forms like this into a massive application with NgRx state management, a real-time database, and user authentication, check it out here: ➡️ Full Jira Clone Tutorial: