Get Advice from Experts on Buddhism
If you are taking a class, ask your instructor for suggestions!
Also look into Oxford Bibliographies Online. Buddhism (Harvard Login). This resource includes an overview of the scholarly study of many aspects of Buddhism and gives selected book and article suggestions for finding more information. The articles are written by top scholar in the fields, making this an authoritative guide to current scholarship. Choose "Buddhism" from the top subject menu before browsing or searching.