Official Guide Companion (Manhattan Gmat Prep)
Chapter by ChapterPart I: INTRODUCTIONPart II: DIAGNOSTIC TEST EXPLANATIONSPart III: PROBLEM SOLVING EXPLANATIONSPart IV: DATA SUFFICIENCY EXPLANATIONSPart V: HORACIO'S HOT LISTPart VI: OG PROBLEM LISTS BY CATEGORY