What are the best UI design courses for free?

Are you a complete beginner and interested in learning the basics of user-interface (UI) design? A typical UI design course can be quite pricey. However, there are good quality but free UI design courses that can teach the fundamentals. If you want to get a taste of what UI design is all about so you can decide whether or not it’s for you, here are seven free online courses that will give you an introduction:
1. Fundamental UI Design at InVision
Building a product that people love is possible, no matter what stage your product is in. Fundamental UI Design is the essential course for experienced designers and beginners alike. This free course includes the basics of the design process, the fundamentals of user interface design, and prototyping techniques to show you how to create your designs from start to finish. InVision is a very popular digital product design platform and is used by some of the best brands in the world. However, you don’t need an InVision account to participate in this course. All you need to do is sign up using your email address and you will get one tutorial per week for the next 5 weeks. The tutorial will cover topics like Hierarchy, Visual style, Navigation/control design, designing user behavior, information architecture, design process, and responsive design. If you like to learn by reading rather than binging on videos, then this course is ideal for you as the compact emails contain a lot of information.
2. Introduction to UI design at Coursera
Coursera’s UI Design class is a three-course curriculum designed to teach students the subtle art of designing a user interface. The class covers all aspects of UI design, from the process of design to elements of design such as colour theory, typography, and other practical aspects. Completion of this class will grant the student a certificate from Coursera with certifying information for their resume or LinkedIn profile. The entire course contains about 33 videos and would take you about 14 hours to complete
3. Fundamentals of User Interface Design at Udemy
This Udemy video course, Fundamentals of User Interface Design, will take you on a journey through the fundamentals of great User Interface design. In this course, you will learn the importance of principles in User Interface design such as colour theory, typography, and much more. You will also be guided to use Adobe XD for creating wireframes and prototypes of your designs. If you need a certificate or detailed feedback from your instructors, or if you want to message them to ask questions about exercises or their experiences as designers, then you will need to purchase the full version of this course. Otherwise, it’s free.
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4. Essentials of Interface Design in Just 7 Days with Denislav Jeliazkov
The Essentials of Interface Design in Just 7 Days is an email-based course that goes over how to design clean, simple web and mobile interfaces. You will receive 7 daily emails over a week-long period. Each email will contain critical insight into improving user interface design skills through practical teachings and helpful graphics. Several lessons will teach you what it takes to design effective web navigation, colour palette selection, typography usage, and brand identity.
Once you complete these courses, you can move on to some free CSS courses to take your knowledge of design to the next level.