[imakecomments]

Any PreCalculus text -> Stewart Calculus -> Strang + Axler Linear Algebra -> a Calculus based Statistics & Probability book. Do the problems in the books. Read each chapter. If you do that you'll know Calculus and Linear Algebra better than most. If you want to then move up from there study Real Analysis and higher level math like Measure theory (but this may not be necessary for your purposes).