Start with high-confidence comparative politics books, then narrow by subgenre or adjacent topics.
Short Circuiting Policy
Leah Cardamore Stokes, Teri Schnaubelt
Sudan, South Sudan, and Darfur
Andrew S. Natsios
The Politics Book
DK, Paul Kelly
The Breakdown of Democratic Regimes
Juan J. Linz, Alfred Stepan
Political Science for Dummies
Marcus A. Stadelmann
Germany
Andrew I. Port
Late Fascism
Alberto Toscano