What types of free courses does Udemy offer?

Udemy is a trustworthy online learning platform where you can learn everything about Deep Learning, from the basics to the advanced-level concepts. Here are some top Deep Learning course options for you available at Udemy with not more than 1-day duration and fees ranging between INR 350 and INR 3,500:

• Deep Learning A-Z: Hands-On Artificial Neural Networks
• Tensorflow 2.0: Deep Learning and Artificial Intelligence
• Deep Learning: Advanced Computer Vision (GANs, SSD, +More!)
• Complete Guide to TensorFlow for Deep Learning with Python
• Complete Tensorflow 2 and Keras Deep Learning Bootcamp
• Deep Learning with PyTorch for Medical Image Analysis

You can access Udemy courses on multiple devices, such as desktops, laptops, tablets, and mobile phones. There is no limit to the number of devices on which you can access your Udemy course account. 
However, it is important to note that some features may or may not work or may work differently depending on the device or platform's compatibility. For example, you can customize your learning with reminders and use dark mode on the Udemy app. You can also learn anywhere with offline viewing, Chromecast, and AirPlay. Please check which features you want and access the device accordingly.

The Udemy completion certificates indicate that a learner has completed a course, though they don't qualify as officially accredited participation by any university or professional organization.

They may still be valuable for showing skills on your CV and LinkedIn. Certain employers attest to embarking on self-study initiatives recognizing Udemy courses.

To gain industry-recognized credentials, a student may need to take Certification Examinations with professional/industrial bodies (e.g., AWS, Google, Microsoft) after a particular course with Udemy. 

Yes, you can access Udemy offline, but there are a couple of restrictions:

• Courses are downloadable for offline viewing through the Udemy app on mobile devices.

• They may not be viewed offline directly on a desktop or laptop. However, you may download lectures on these devices with the instructor's approval.

• Udemy Business users may download courses via the app, but restrictions may exist depending on their organization's policies.

Udemy offers a few courses related to radio jockeying, but they are not specifically designed to teach you how to be an RJ.  The courses offered focus more on the technical aspects of radio, such as how to start a web radio station or use radio broadcasting software. Some of these courses are mentioned below: 

Note- The above information has been taken from external sources, and hence may vary.