Jeremiah - it would be great if you can read through the book, or some chunks of it, before the conference. If time is limited, read Jer 1-6, 15-20, 29-33.

 4 Reasons You Should Preach through Jeremiah (Article by Joel Kurz on the IX Marks website).

 Christopher Wright, The Message of Jeremiah, BST, 2014 - an accessible and helpful commentary. Hard to find at present, but a new edition will be available in August… just in time for the conference.