Upon request, usually with a minimum of 5 students, I can organize review/study sessions for most undergraduate math courses.
Calculus, linear algebra, abstract algebra, and combinatorics/discrete math (e.g. Math 1A/1B/16A/16B or 55/110/113/114/172 at Cal) groups may start at any time during the semester. For other upper division courses, I will usually only form groups near the beginning of the semester.
Please email email@example.com to discuss options.
(Due to conflict of interest reasons, I don’t run private/group sessions for any classes I am currently teaching, and my current students at Berkeley are not eligible to enroll in these sessions, even for other classes.)