What is it that you want to achieve? Do you eat too much, eat irregularly/on the go, eat out or get takeaways, hate fruit and veg, too busy to prepare food..? If you give us a few ideas about what your problems are then maybe we can help give you the inspiration you're after.
I did it when I had a lightbulb moment. I managed to wedge myself between my coffee table and tv unit and had to be rescued by my husband. That's pretty depressing (although now I think it's hilarious ) So, I threw out the junk that was in my house - the chips, doughnuts, onion rings, crisps etc and ate what was left. I started eating breakfast, proper breakfast not crisps and dairy milk. Learned about portion sizes and started weighing my rice, pasta, potatoes etc. And I started walking, set a timer for 5 minutes and walked away from my house, when the alarm went off I turned round and walked back. Did that until it got easy then upped it to 7 minutes and so on. It sounds pretty dull but I eat more variety and am more adventurous with food now than I ever was before. Healthy eating can be delicious, inexpensive and simple to prepare.
To get going you could have a look at healthy versions of foods you really like, so you're not changing too much too quickly maybe you're just changing the salt/sugar/fat content, adding more veg or changing the preparation method. Sorry that's a bit vague but there's no point rattling on too much until we know what you're looking for!
I have 35-50g (uncooked) rice, quinoa, bulghur. 75-100g pasta. I don't weigh potatoes no idea why I said that!. I cook 2 or 3 small to medium potatoes (whatever looks about the size of a baking potato). I don't eat bread so most of my starchy stuff comes with my evening meal. I know some people only have 50g pasta but for a main meal that would be no fun for me.
I still weigh them, it's too easy to let the portion sizes creep up otherwise. I also serve the main bit of the meal if it's curry, stew or whatever with the same spoon each time so I don't serve too much.
I don't eat bread because it makes me swell up like a big balloon. I have it on occasion for a treat but then I suffer - a bit like enjoying a night out then having a hangover!
They'll probably be with things like cous cous, or in the whole foods or world foods sections if you have them at your shop. Quinoa is expensive if you buy a bag of dried ready to cook, you can buy ready to eat pouches (Merchant Gourmet brand) which are a bit cheaper if you just wanted to give it a go without spending £4 on a bag you won't get through. Spelt is nice too but again it's not cheap.