Hi, gloria !
If you've never run before and would like to start, I suggest starting with a Couch to 5K program. A C25K assumes no prior running experience and will literally take you from your couch to a 5K road race. You can go here for more info. www.sparkpeople.com/resource/fitness_artic
Cool Running is also an excellent runner's website. www.coolrunning.com
Also, if you've never run before, get fitted for a proper pair of running shoes. Don't wear any old shoe. someone who runs needs to make sure their feet have proper support. Because wearing the wrong shoes while running can cause a bunch of different problems. www.sparkpeople.com/resource/fitness_artic
So, don't skimp on your feet. Go to a reputable running/walking store or a reputable sports store to be fitted for decent shoes.
Now, as far as losing inches off your waist, not an easy question to answer. At your current weight and height, you're already at the low end of health with a BMI of 19.9. I know you feel your waist is too big and needs to be smaller, but at a BMI 19.9 you may find it difficult to lose. That's because your body fat probably already is low and might not go lower. Here's the thing with women. Women are supposed to carry some body fat to be healthy. And if it goes too low, we're at risk for a number of medical issues including loss of menstrual cycle and osteoporosis.
What to do ? If you want to start running, get fitted for a proper pair of running shoes and check out a Couch to 5k program. If you want to start strength training, you might consider taking a weight training group class like Body Pump. Check the gym schedule to see what's available. could be a sculpt class. could be flex and pump. these classes have lots of different names.
However, a group weight training class will do two things. One, you'll learn the basics of strength training. two, you'll have access to an instructor who can watch you for form. Form is everything when a person starts strength training.
You might want to find these books at your local library. they are good basic beginner strength training books.
New Rules of Lifting for Women
Body for Life - Bill Philips.