Just a few things reading back through this thread:
-It begins and ends with diet. You can workout as much as you want, but if your diet isn't on point, the pounds aren't going to come off as quick. I eat super clean during the week and splurge a little on the weekend, and it's a fine balance for me. Also, having healthy snacks around is key, especially when I take my....cough MEDICINE cough....
-High Intensity Interval Training (HIIT) is shown to burn calories and fat at a higher rate than typical cardio. So you run/elliptical/row as fast as you can for a 30-60 secs, then walk/jog/whatever at a slower pace for 60-90 secs, repeat for 10-20 mins. I prefer it because of the variety as compared to just jogging for a long time.
-If running or jogging is hard on your joints, go for the elliptical. Great alternative with low impact.
-If you can't afford a gym membership, bodyweight exercises and kettlebell exercises are great alternatives. Push-ups, pull-ups, sit-ups and squats at a high volume can give you great results and a great cardio workout.
I held on to the high school mentality of being the biggest and strongest bro for too long, and now after a few injuries, I've reworked how I approach fitness and I'm in better shape at 31 than I ever was at 17.