Course information can be found here.
Problem set 4 (practice problems here)
Problem set 6 (practice problems here)
Some practice problems for the midterm
Some old practice midterms: M1-09 (and solutions), M1-10, M2-09 (and solutions), M2-10 (and solutions)
Solutions to the last problem on the midterm
Some old practice finals: W09 (and solutions), W10 (and solutions)