Tips for new drinker !

Hello guys! I’m new to drinking I’m a pot head mainly but I would like to know what you fellas recommend?? Right now all I’ve had are beat boxes and buzzballs. I have a samclub card so I get biggies for 15 usd. I need something low in cal that will get me fucked. Also is there a way to be fit while drinking??? I had went to spar at my mma gym for the first time drunk it was fucking amazing