I do free weights, mostly dumbells.
My warm up is 10mins on a treadmill, 30 secs 10-12mph, then down to 6mph for a minute, and repeat.
I'd recommend chin/pull ups, dips and push ups.
With the following exercises I select a weight which allows me to do two sets 8-12 reps, where my failure point (last possible rep) is within that zone.
Dumbbell Fly
Dumbbell Bench Press
Dumbbell Arnold Press
Dumbbell Lying Rear Delt Row
Dumbbell Lunge (needs quite large weights)
Then the others I do (non-weighted)
Weighted Twisting Crunch
Weighted Triceps Dip (unweighted - I'm no machine!)
Weighted Chin-up
Weighted Pull-up
Superman
I have these exercises split between two days, so I don't focus too much on one group in one go. I have a rest day in between