Starting out with cardio - couch to 5k.  I'd like to build some semblance of stamina like a regular person.  Right now I'm shit.  I honestly don't know enough about lifting to start any sort of program yet.  Everything I read said that you need to lose a substantial amount of weight before you introduce an exercise program.  I'm at that point now and for a novice, I think starting out with one thing and easing into it ought to be the best.  I'll definitely injure myself if I jump into everything at once and I do NOT want to be laid up with an injury because I was stupid and impatient.