Angular is a powerful framework that offers a multitude of features that can significantly enhance your web development experience. Here are 10 essential Angular features every developer should know:

1. Two-Way Data Binding: This feature allows automatic synchronization between the model and view components, simplifying the process of updating your UI with changes in data.
2. Dependency Injection: Angular's built-in dependency injection system makes it easier to manage and test your services.
3. Modular Architecture: This enables developers to break down their application into manageable pieces, enhancing maintainability and scalability.
4. Directives: These are attributes that enhance HTML with new behaviors, providing a way to create rich and interactive web applications.
5. Services: This feature promotes code reusability by allowing you to define reusable functions that can be easily injected into components.

In addition to these, Angular comes with several other vital features. Understanding these can aid in developing more efficient applications:

6. Routing: Angular's router enables navigation among different views or components in the application seamlessly.
7. Forms Management: Angular provides two powerful approaches—template-driven and reactive forms—for handling form validations and data binding.
8. HttpClient Module: This feature simplifies the process of interacting with external APIs, making AJAX calls easier and more efficient.
9. Pipes: These are used to transform displayed data in the template, enhancing user experience with formatted output.
10. RxJS Support: Angular leverages RxJS for handling asynchronous programming, creating a more robust application.

Building a dynamic web application using Angular combines the power of TypeScript with a robust framework that enhances user experience through seamless interactivity. To get started, install Angular CLI by running the command npm install -g @angular/cli. This tool allows you to create a new Angular project easily. For a comprehensive guide on installation, visit Angular Setup Guide. Once installed, initiate a new project with ng new my-app, and navigate into your project folder using cd my-app. This will set the foundation for your dynamic application.

Next, implement components, services, and routing to create a dynamic user interface. Start by generating a new component with the command ng generate component my-component. This structural organization is essential for managing your application's functionality efficiently. Integrate services for data management by generating a service using ng generate service my-service, which helps handle data interactions, such as API calls. For routing, configure the app-routing.module.ts file to provide an intuitive navigation experience. For more on building dynamic components, check Angular Component Overview.

When developing applications using Angular, avoiding common pitfalls can significantly enhance your workflow and application performance. One of the common Angular mistakes is neglecting the use of Angular’s built-in tools, such as the CLI. The CLI streamlines tasks like generating components and managing dependencies, thus preventing time-consuming errors. Additionally, improper handling of services and dependency injection can lead to unmanageable code and difficult debugging. Make sure to follow best practices and utilize Angular's features to maintain organized and efficient applications.

Another significant mistake is the heavy use of ng-repeat or similar directives, which can adversely affect performance. Instead, leverage the power of the ngIf and ngFor directives efficiently. Moreover, not implementing lazy loading for modules can result in bloated initial application load times. To counter this, refer to the Angular documentation for insights on correctly configuring lazy-loaded modules. By addressing these issues, you can significantly prevent roadblocks during your Angular development process.