Get easier exercise recommendations with video demos for Leg Strength Workout
(Jenn's Version) 

Exercise one: 3-4 sets

Reverse Lunges (alternating sides) either dumbbell or barbell
  8-20 reps per side

In between each set:

 Standing calf raises 15 reps (you can do this as a single sided exercise. In that case do 15 reps on each side)

Easier options:
do your calf raises with no weight and standing on the floor (not on an elevated surface)

Exercise two: 4 sets

Squats either dumbbell or barbell 8-20 reps
(2 sets in close stance)
(2 sets in wide stance)

Easier options:
*Free squats, *Static lunges assisted (holding on to a stable object for help if needed)

Exercise three: 3-5 sets

Stiff-legged Dead Lift either dumbbell or barbell 8-20 reps 

Easier options:
*Free squats, *Static lunges assisted (holding on to a stable object for help if needed)