I am a learner and using udemy from last year 2017 and its a very great place to learn, you have lots of cources in every field. I learnt a lot about graphic design and still learning. NO TIME LIMIT we can give time according to our comfort and best of all thing is they have discussion forum with every couse so that we can clearify wherever needed. Academic Courses to professional courses and even lots of free courses. It helps me in earning from free lancer. Learnig was never so enjoyable for me. I am thankful to UDEMY.