Even if you haven't read the Critique of Pure Reason, the Critique of Judgment offers a very interesting entry point into Kant's thought. For a long time in France readers would apparently begin from the third Critique, and Whitehead remarked that Kant should have started his critical project with the Critique of Judgment.
The first two Critiques (Critique of Pure Reason and Critique of Practical Reason) deal with what Kant calls determinative judgments, which are judgments where we have a concept to put on an object. The Critique of Judgment focuses on reflective judgments which are the result of being presented with an object which needs to be determined. The reflective judgments serve to help us understand how the subject first is oriented with his faculties (how our faculties relate to each other).
The particular types of reflective judgment that Kant examines are the judgment of taste (concerning beauty and the sublime), and the teleological judgment.
WEEK 1: ~87 pp.
WEEK 2: ~73 pp.
First Part: Critique of the Aesthetic (Power of) Judgment
Analytic of the Sublime
WEEK 3: ~71 pp.
Deduction of Pure Aesthetic Judgment
Appendix: On the Method of Taste
WEEK 4: ~116 pp.
Second Part: Critique of the Teleological Power of Judgment