For Linear Algebra:
Follow this course https://ocw.mit.edu/courses/mathematics/18-06sc-linear-algebra-fall-2011/
along with "Introduction to Linear Algebra by Gilbert Strang" (Go to this link & download it http://ebook-dl.com/dlbook/19443)
For Calculus : follow Gilbert Strang
& follow this course : https://ocw.mit.edu/courses/mathematics/18-01-single-variable-calculus-fall-2006/video-lectures/
Calculus: https://gatecse.in/calculus/
Linear Algebra: https://gatecse.in/linear-algebra/
Probability: https://gatecse.in/probability/
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