I'm currently doing this course : https://www.udemy.com/course/cuda-programming-masterclass/ It's not so bad.
But I'm wondering if it wouldn't be better to use a book like that instead : https://www.amazon.fr/Professional-CUDA-Programming-John-Cheng/dp/1118739329
It's older but the table of contents seems to indicate a progressive learning of CUDA.
May be a good choice for a beginner.