Hello!
Do some search on the internet and find a diet you like! But what worked best for me was to educate myself about calories and then count them. When you hit a certain number of calories (for me that's usually 1200) you stop eating for the day. So the point is, you can eat everything, but in a day or two you figure out that you have to lean towards healthy foods, if you don't want to be hungry.
I'm sure you can get some workout just form walking, but if that's a problem for you, you can still lose weight without much exercise. Don't let that discourage you.
Good luck!