Pls look at the below link, it has enough and more information for starters:
The link will have sections on below:
I don’t know anything about marketing. Where do I begin?
How can I optimize my course on Udemy to get more students?
How do I use Udemy’s promotional tools (bonus lecture, promotional emails, instructor coupons)?
How can I take advantage of social media (Facebook, Youtube, etc.) to market my courses?
What else can I do to improve my marketing?
You can get more insights using the below link on Instructor payments:
*You need to link your bank account with paypal and once learners start buying your course, you will receive your payment once a month: around 10th.
All the Best.