Bootcamp style programs were based on army training, using the body weight as resistance. (Push-ups, pull-ups, sit ups, flutter kicks, planks and so on).
Can you forward plank for 2 minutes?
How about side planks for1 minute each side?
How is your lunge?
Can you get your back knee almost down to the floor?
Are you stable?
How about going backwards?
Most people I see lunging are wobbling all over the place. Master your body weight lunge first.
How many push-ups can you do?
Squats - Can you squat the entire way down, butt between your heels?
Why are squats important?
This was the way in which we used to (excuse me if your eating at this point) defecate. In fact many experts claim that reason we are rife with constipation and disease related syndromes of the bowel, is that we do not squat when we are on the toilet. This squatting technique enables us to empty our bowels properly. Apparently you can stand on the toilet seat and squat down that way.......... ! There are also potties specially designed to fit the loo seat, which enable squatting to poop.
Anyway squatting- see if you can do a 100-body weight squats before loading your self-up with weights