Really Overweight.

I see a lot of heavier people at my gym using exercise bikes; easier on joints and less pressure on feet, etc. than a treadmill. Personal trainers work with people of all sizes and levels of fitness. Do the introduction, and then schedule a couple of sessions with a personal trainer.

Find out what you enjoy doing and do that, you are much more likely to stick with it that way. When you are in the habit of exercising you can worry about forcing yourself to do things you don't like :P

THIS! If you don't like the exercising that you are doing you aren't going to stick with it. Since you are starting out, go low impact for sure whether it be bike, treatmill, eliptical, etc. Just keep moving and enjoy it and you will have success. Good luck!

Love that you're starting out at the gym right off, exercise certainly can help you feel better and look better.

That said, remember that you can't out-exercise a bad diet. You need to follow the guidelines on MFP with a moderate weight loss goal (you could probably start with lose 1 1/2 pounds a week and adjust as necessary) and track everything you it. Go ahead and eat back the exercise calories, as a deficit is already worked in But if you don't track your calories it can be very easy to eat more than you're using, especially as you're unused to working out.

Good luck! Things can be a bit rough at first. Starting a new routine can cause some water retention for a bit, so don't put too much emphasis on what the scales say for a while. You can do this. :flowerforyou:

I have approximately the same amount of weight to loose so I understand where you are. I started out at the gym also and did my diet and discovered I wasn't really loosing weight. I finally figured out that my body wasn't shedding the pounds because it was in shock. So what has been working for me is to only focus on my diet first and occasionally I do some light toning exercises on the weight machines but that is only to build a little muscle to help with my arthritis. The more muscle you build the more calories you burn. But to be honest, you won't burn enough calories to loose weight, you have to start by eating less of them first.

Hiya! Thanks for so many reply's so quickly.
I am following a diet and have lost 2 stone so far this has given me the confidence to go to the gym as I know it will help.
I just don't want to end up fainting cause I am so unfit or making a fool of myself.

Don't sell yourself short - you will be amazed what you can do. I started my weight loss journey at 333 pounds, I am down 150. When I first started at the gym I got on the treadmill and walked for 10 minutes at a speed of 3.0 and built up. Don't let your head get in your way. Trust that you can do it, because you can. : ) Good luck!