You said the exact same thing about your diet (which sucks and needs more attention than your training). I suggest simplifying everything, choosing one pre-designed plan (pretty much any workout or diet here) and following it to the letter without asking for more input about what to do.
[quote]A guy I know told me I should only focus on the big 3 lifts (bench, squats, deadlifts) for a month. Is this a good idea?
[…]
Goal of my training is to stop being a fat p.o.s and get strong as fuck[/quote]
Doing only the big three lifts for a month won’t help you drop fat and won’t get you strong as fuck. Don’t go to that guy for advice anymore.