The beginnings when you do not have a community are not always easy, and that you already have students is very good! Congratulations! The subject of your course is very good, has a lot of demand and has a good number of hours the course. As a suggestion I would analyze the title of the course since for example saying Android, one does not know if you are referring to the Android operating system or if you are going to teach how to create applications. If you have friends, acquaintances or relatives who know that you are interested in the course, you can provide some free coupons, but it is not recommended to free coupons in social networks to people you do not know. Marketing is always good, you can share your coupons in groups of different social networks that are for example, Android app development. I share articles that you can find useful in the community: https://community.udemy.com/t5/Marketing/How-can-I-market-my-course/m-p/435#M40 https://community.udemy.com/t5/Marketing/The-importance-of-your-promo-video/m-p/10821#M828 https://community.udemy.com/t5/Course-Creation/How-Important-your-quot-Welcome-quot-and-quot-Congratulations/m-p/7102#M470 https://community.udemy.com/t5/First-time-Course-Creation/First-Course-Paid-or-Free/m-p/14182#M993
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