Best Free Resources (better than paid ones)
SQL:
Enroll for Hands on Free Course
Rather than only watching videos, Solve questions in the websites itself.
Statistics:
Build your probability and hypothesis testing intuition.
Khan Academy (Most Underrated resource)
Watch Videos and solve questions for understanding.
Alternative: If you are visual learner, but no hands practice included (must needed for deeper understanding). Watch this if not understood any topic.
StatQuest Youtube series
https://www.youtube.com/playlist?list=PLblh5JKOoLUK0FLuzwntyYI10UQFUhsY9
Mathematics:
Learn Linear Algebra and Calculus for intuition behind Machine Learning Algorithms
Machine Learning
Hands on Coding Practice Available here:
Use menu option for more Tracks on Top Left side of this Website.
Bias and Variance
Naive Bayes
Gaussian Naive Bayes
K- Means
PCA
CART – Classification and Regression Trees
https://www.youtube.com/playlist?list=PLblh5JKOoLUKAtDViTvRGFpphEc24M-QH
Support Vector Machines (SVM)
https://www.youtube.com/playlist?list=PLblh5JKOoLUL3IJ4-yor0HzkqDQ3JmJkc
AdaBoost