The purpose of this study is to assess the feasibility, acceptability and test the initial efficacy of eSBI, (electronic screening and brief intervention for alcohol use) coupled with STTR (Seek, Test, Treat, and Retain) in comparison to STTR only among YMSM (young men who have sex with men) and YTW (young transgender women) on frequency of substance use and engagement within the HIV (human immunodeficiency virus) and PrEP (pre-exposure prophylaxis) care continuum.