April:

13  Overview and The rejection of rationalism.

Treatise, Book I, Part I, sections I-V
Treatise, Book II, Part III, section III
Treatise, Book III, sections I and II
Enquiry, Appendix I
Essays, "The Sceptic"

27  The account of moral judgment.

Treatise, Book II, Part I, sections I-VI,
Treatise, Book II, Part II, sections I-III
Treatise, Book III, Part III, sections I-VI
Enquiry, Section V
Enquiry, Appendix IV
Essays, "The Standard of Taste"

May:
 

11  Justice and the other artificial virtues

Treatise, Book III, Part II (especially sections I-VIII)
Enquiry, Section III and IV,
Appendix III
Enquiry, Section IX, Part II
Essays, "Of the Original Contract"

25  The natural virtues

Treatise, Book III, Part III, sections I-VI (again, with a different focus)
Enquiry, Sections VII and VIII
Enquiry, Section IX, Part I
Enquiry, Appendix II

June:
 

8    Explanation, Justification, and Reflective Endorsement

Enquiry, Appendix IV
A Dialogue