At Boston University introductory chemistry is taught in CH101/2 General Chemistry, a two-semester course intended primarily for science majors, pre-medical students, engineering students who require a one-year course, and other interested students.
The first half of the course, CH101, is supported by this web:
All posts to Piazza go to everyone in the course and so this is the fastest way to get your questions answered and to help your classmates with their questions.