What do you think about training courses at udemy.com?

May I ask for your advice?



Has anyone taken many courses at udemy.com? There are courses, ranging from piano learning to music production. The courses are frequently on sale.



Are the quality of the courses excellent? There are reviews on the site, but I don't know if the reviews are genuine.



My sincere thanks,

What do you think about training courses at udemy.com?