Don't know how experienced you are or how complete your free weights are.
I've collected a couple of routines for home that just used Dumbbells (15lbs - 60lbs), a flat bench, and 310 lbs Olympic bar and weights. (Just added a Smith Rack and Incline bench this week and I'm psyched.)
For bulking up, suggest just eating enough protein and sticking to the full body exercises, which seem to get neglected way too often.
You can always get a slight decline on your bench by raising one end on some 4x4s or something similar.
==========================
DAY 1 - Upper Body (Except Back)
Bench Press, 2 x 8-10
Seated Shoulder Press, 2 x 8-10
Alternate Curls, 2 x 8-10
Bent-over Kickbacks, 2 x 8-10
Crunches, 3 x 20-25
DAY 2
Squats, 1 x 15-20
Deadlifts, 1 x 15-20
One Arm Dumbbell Rows, 1 x 8-10
One Leg Calve Raise, 1x15-20
Crunches, 1x15-20
*Twice a week program - each routine once a week, minimum 2 days between
=============================
DAY 1 (Upper Body)
Dumbbell Bench Press 2 x 8-15
Dumbbell Side Laterals 2 x 8-20
Dumbbell Curls 1 x 8-15
Bent-over kickbacks 2 x 8-12
DAY 2 (Lower Body)
Dumbbell Squats 1 x 10-25
Dumbbell Deadlifts 1 x 8-15
Dumbbell Rows 2 x 8-20
One Leg Calve Raise 2 x 15-50
Crunches (with weight) 2 x 20-30
*Twice a week program - each routine once a week, minimum 2 days between
======================================
Squat 1-2 sets
Stiff Leg Deads 1 set
Calf Raises x 1 set
Bench Press 1-2 sets
supersetted with
Bent-over rows 1-2 sets
Arnold Press 1 set
Hammer Curls 1 set
Full body program - 2-3 times a week, at least a day between
==============================