Yes, Udemy courses are affordable and helpful for learning new skills at your own pace, but course quality can vary, check reviews before buying.

Udemy certificates are not accredited and may not be recognized by employers, but they can still demonstrate your commitment to learning relevant skills.

Yes, most Udemy courses can be downloaded for offline viewing on the Udemy mobile app; some instructors may also allow downloads on desktop.

Udemy for Business is a subscription for teams to access a curated collection of courses, while regular Udemy is ideal for individual students purchasing courses one at a time.

Popular alternatives include Coursera, edX, Skillshare, Pluralsight, LinkedIn Learning, DataCamp, etc.