Start with your meat and potatoes lifts. Bench press Dead lift Military press Squats Pull ups Dips Make it part of your lifestyle.
this is the best post in tihs thread including mine.
like, you could do much worse, than to do nothing but these exercises. in fact honestly, i would recommend for the first 6 months, just do these every other day, monday/wed/fri and the other days just do stomach/cardio stuff.
this is all your core stuff.