Useful things have been said, so I'll just add a thing about running: I found intervall running (2 minutes walk, 1 minute run fast -- 4 sets) very useful in catching busses. Running any longer than that is not on my list of things to do.

I am doing "The new rules of lifting for women" and like it -- "find a plan and follow it" works for me. Some of the workouts are longish, though.