Great suggestions everyone. Esme, as you can see, you've got all the resources to help you on your way right here--collective feedback is always motivating.
First, I can appreciate this all this sounds overwhelming. I'm unsure of how active you were before, but I'll go ahead and assume that making the jump into training is quite a shift from your regular routine. That said, it can seem like a whole lot of effort to get the ball rolling. The biggest thing to remember is to be consistent. Making it to the gym six days one week is fantastic, but if you neglect to exercise the following weeks after, you are not going to see results that stick. Ultimately, based on simple logic, you need to be moving more and eating less. The eating component can be achieved by choosing the "right" foods--the ones we all know that we're supposed to be eating, but somehow never do, i.e. whole grains, lean protein, vegetables, fruit, and lots of water. I wouldn't worry too much about minute calorie counting for now; you should start seeing results based solely on the switch from eating fat-saturated fried foods to ones that will maintain a more steady glycemic level. You seem to be eating smaller, more nutritious meals more often; this is also key to success. In short, you're on the right track, so keep it up. The nitty-gritty of eating does come into play, but for now, focus on doing what you're currently doing. Since you're just beginning your journey, the change you've initiated should already be getting the ball rolling. Point: don't sweat the small stuff for now, maintain this healthy well-proportioned eating.
In terms of exercise, again, be consistent. If you've never really worked out before, the routine can seem overwhelming. Set whatever schedule you can, and stick to it. Ideally, you'll want to combine some weight lifting with some high(er) intensity cardio, but for now, even moderate resistance training and some light jogging will have an impact on your weight loss. If, right now, more intense running seems unrealistic, you could even schedule a brisk walk for most days of the week. It seems small, but the jump from being sedentary to active will have an effect on kickstarting the fat burn. With this in mind, set yourself with weekly and monthly goals, and try to beat or increase those numbers each time. For example, if you're currently doing 15 minutes on the elliptical twice a week, try adding an extra 15 minute cycle the following week. If you're walking moderately, try adding in a 1-1.5 minute sprint. I would advise crafting a workout schedule that seems attainable to you in your current leg of the journey; this will get you moving, which is the most important part. Once you discover that you can and will meet these goals, aim to set the bar a little higher each time. You want to feel that your body is being challenged, but you also want to ensure that your goals are achievable for yourself and where you are at this point. This is a practical way of increasing the intensity of your workouts while still appreciating the challenges of leaping into fitness head-first.
Remember, consistency (making sure you keep eating healthy, well-proportioned meals more often and remaining active) and intensity (ensuring that your body is being challenged) are key to seeing results. Whatever you choose to do in terms of exercise, be certain to keep it up, whether it's light cardio twice a week, hard jogging 4 times a week, etc.
Hope this helps.
Best of luck,
Lee