Officially introduce yourself to the community by sharing your goals, obstacles or accomplishments. Don't be shy.. we're all here for the same reason. The more support we share the easier it will be to reach our goals!
A rep is a single movement. Think of it as one single push-up. If you are doing 3 sets, 10 reps each; it's doing ten push-ups in a row then resting. Then repeating that two more times for a total of three sets.
Losing weight isn't just exercising. It's changing your habits and becoming a healthier person through diet, strength training, and cardio. Check the diet and nutrition forums for helpful advice, and get set up with a weight loss and toning routine from this site.