MIT uploaded 8.01, 8.02, and 8.03 (as well as other courses) to the Internet Archive awhile ago.

8.01: https://archive.org/details/MIT8.01F99

8.02: https://archive.org/details/MIT8.02S02

8.03: https://archive.org/details/MIT8.03F04

Edit: I don't know if all the problem sets are up there.