What do you like best?
Well, where to start - 4 main things where I think Udemy is really great at:
1. Huge number of courses in so many topics (really, it is amazing how they can offer course from workouts, programming, health, big data, cyber security etc) - there is really a lot of content and there are many free courses around
2. Most of the courses have attached materials, where you can deepen your knowledge further
3. Coupons - there are sites, where you can find or get coupons for the courses, which will be a high price reduction or a 100% clearance
4. Certificate of completion, that you can use also outside the study framework (e.g. in LinkedIn)
Another pro is that you can take the courses, whenever you want - this is something that very useful to me, as if I would like to progress quicker with a topic, I can do so, but if I have lack of time I can slow down a bit, without risking my study. If you are self-paced learner, then it is a good choice.
What do you dislike?
Quantity does not always mean quality. Large number of courses, and the quality is waving a bit: I did many courses, where I found wow, such an excellent quality and some, where it was pretty hard to understand the instructor due to bad sound quality or due to terrible accent. In even more rare cases I had the feeling that the instructor lacks of knowledge of the topic he speaks about - but this is very rare.
Recommendations to others considering the product
Usually I recommend to just simply try a product, when you have some time to spend on it. This is also the case now, but I suggest do not stop taking courses, if you are not satisfied with the quality of the first course, as the majority of the course are rather good, so try not to judge the site from one course, you easily can take 10-20 course and look into them, how those are structured, what those cover and what is their quality.
Check the online certificate, I think it is pretty cool (well, it is not an accredited course, but does show that you put serious effort into a topic).
What business problems are you solving with the product? What benefits have you realized?
Udemy is an online training site - with wide variety of content - for me this is the most essential part of this site: when I would like refresh my knowledge of a topic, I just take a course, easily can find free ones, and enjoy learning. As there are topics both in management and IT - which is my daily work, I can find courses to fill the missing gaps, but also can find topics related to my hobbies.
I have my own rhythm of learning, the offered self-paced learning schedule really fits with me.