doubles=2 reps, triples=3 reps. When increasing strenght, you're really looking at pushing yourself near your max 1RM, typically between 85-100% of your 1RM (1 rep max=what you can do for one rep).
Yeah...you'd prob want to eat just at maintenence, whatever that is for you rather than hypocalorically.
Google Westside Barbell Club
and go to and check out their articles.