HI and welcome.
The first thing I'd suggest is that you read the various sticky posts in all the forums. A lot of the questions you have will be answered there and it'll give you a lot of information to get started with.
Here's my basic information on
calories and
nutrition.
The easiest way I've found to figure
calories is to take a figure of 14-15
calories per
pound of bodyweight for a moderately active adult (as in, works out 2-3 times a week). I tend to use 14 for women and 15 for men. For you:
14 * 185 = 2590
calories to maintain your current weight.
Subtract 30% from that to get a reasonable level of "diet"
calories.
2002 * 70% = 1813
calories to lose weight.
YOu want to make sure the
calories you eat are made up mostly of complex carbs, lean proteins, and healthy fats. Ideally you should aim for a 40/30/30 split of your nutrients - that's 40% complex carbs, 30% lean protein, and 30% healthy
fat.
My personal preference is also to avoid processed foods. My experience has been that at some point eating too many processed foods will cause a stall in weight. Between the sodium and the chemicals, your
body treats processed food differently than it treats fresh "real" food.
If you eat healthily, you should be able to expect to lose about 1% of your overall bodyweight per week on average. That's a really important part ... ON AVERAGE.
Keep in mind that some weeks you might not lose as much and some weeks you might lose more. The idea is to not focus day by day, but to look at the long term trend, by weeks/months.
As far as exercise, you should do a combination of weight/strength training to make sure you don't lose lean muscle mass, and
cardio to help burn excess
calories. You don't have to spend hours working out - 30-45 mins a day is plenty if you do it EFFECTIVELY. Again, read the sticky posts in the exercise forums and you'll see lots of good information about how to get started with weight training (there's even a thread specifically for women) and how to incorporate effective exercise into your program.
Feel free to ask any questions - there are a lot of us here who are happy to help!