cont.
anyhow you were asking for snacks, and diet stuff. I use eatthismuch.com (non-premium version) to give realistic estimates on how quickly I could lose weight, and to set up meal plans.
non-starchy fruit and vegetables have near-negligible caloric values (with some exceptions), things such as citrus fruit, apples, bananas, carrots, raw fennel, cherry tomatoes make good snacks for me, not particularly because they're healthy but because I like their taste.
To find my meals filling I usually make large salads. Other people complain that salads are usually dry and tasteless, but I'm italian and we usually dress salads with olive oil, vinegar, and salt (don't exaggerate on the oil), and my salads are never tasteless. Furthermore now that it's getting colder I make a lot of soup for myself.
If you feel that you are getting hopeless because healthy cooking looks like a lot of work, you can get a 2nd hand food processor (the kind that slices veggies) from online, family friends, or a second hand store. You can also look at 'slow cookers', where you just dump ingredients in at the start of the day and 5 hours later your dinner is ready.
Lastly, excercise. Excercise can be up to around 30% of your daily expenditure, the rest is calorie use from keeping your body warm. This means either: 'no matter how much you excercise, the calorie burn will only be 30%', or 'if you excercise you can burn and extra 30%' depending on how you look at it.
I reccomend going for a 30 minute walk while listening to a podcast on your mobile every monday-wednesday-friday, then moving up to following couch-to-2k routing for jogging once you're comfortable with it. Winter is kicking in, and I used it as an excuse before to not go jogging outdoors. But you don't need a gym membership. Just dress warmly, and toss your clothes in the wash when you inevitably sweat.
Good luck.