start lifting wights for sure, Here is the routine I do and have done it before with great results.
Weeks 1-3
3x20 basic lifts
3x10 secondary lifts
Weeks 4-6
3x15 basic lift
3x10 secondary lifts
Weeks 7-9
3x12 basic lifts
3x8 secondary lifts
Weeks 10-12
3x8 basic lifts
3x8 secondary lifts
Optional Weeks 13-15
3x5 Basic Lifts
3x8 secondary lifts
split up major muscle groups into days of week
i.e. day 1 chest/tris Basic Lift: Bench Press. Sec. Lift: Incline Press, Butterflys, triceps
day 2 back and bis. Basic: Lat pulldowns, Low Rows. Secondary: variation of pulldowns or rows, bicep lifts.
Day 3 shoulders. Basic: shoulder press, High pulls. Secondary: shrugs, lat raises
Day 4 legs. Basic Squats or leg press. Sec. : leg curls/ extensions, lunges,
The high reps will help evade soreness in the beggingin, but after the first week or so, try to add weight and keep it challenging, so that you will be building muscle. For me, gaining muscle has always been more important than losing fat so this is a kinda intense workout but it works for gaining muscle.
Keep your head up!