from where can i learn AI and machine learning fast and accurately?

Answer 1

From anywhere you can learn. SoloLearn has some lessons on Machine Learning and this article may help if you want to know where to start:

https://medium.freecodecamp.org/every-single-machine-learning-course-on-the-internet-ranked-by-your-reviews-3c4a7b8026c0

Answer 2

Pratice, study and repeat the process.

Answer 3

From where?