NOTE:- THIS IS ONLY FOR EDUCATIONAL PURPOSE .
There are 2 ways you can do it :-
1)Download using Kickass Torrent
You can download udemy courses from kickass torrent the link is kat.how.
Go there and type what you want to download For eg :- Udemy Python.
But Note that there are chances you will not be able to find the course you are looking for but no need to get DISHEARTENED.There is still one more way left.
2)Download By just Searching
This is one of the easiest way to do it all you Need to do is search the name .