https://www.udemy.com/prezi-advanced/?couponCode=witer9
Coupon code not valid for this course
Hey, did you check the coupons before posting? I tried all 4 courses within minutes of your posting, and of course same story - none of them work. Coupons should be tested before posting.
First and foremost the link posted is not for the course mentioned "Advanced IBM SPSS"