I was wondering how would you hit your body twice a week and how often should a person increase the weight oon their lfits
Mon - chest/tri's
Tue - back/bi's
Wed - rest
Thu - legs/shoulders
Fri - rest
Sat - chest/tri's
It might not be what you were thinking, but it is essentially a three day, body part split done twice within a week.
Progression can be made by increasing reps and/or sets. Once that rep range has been achieved, go back down in reps and increase the weight used.