In the past decade, the internet has allowed for numerous free and accessible resources for learning mathematics. These include Open Education Resource (OER) textbooks and online notes from college-level instructors. We recommend the following resources if you're looking for extra help:
Textbooks and Online Notes
Mathematics Libretexts are a set of textbooks ranging from arithmetic and pre-algebra through calculus and beyond.
Paul's Online Notes features both lecture notes and practice problems for courses for Calculus I, II, & III as well as Differential Equations.
Video content
SVSU students and professional tutors have produced numerous solutions to individual problems at both SVSU Micro Math & SVSU MPRC Video