Listen to 'auntie' 'shovetheholly' and take her advice.
Blimey, Ferguson, I'll never shut up if you go on like that!! 
Ellen - I was confused before, I think I understand what you are asking now. But just to make sure (because I am having an exceptionally dim day): you are saying that you intend to have a garden full of plants eventually and you're wondering whether you should put stone chippings or some kind of mulch between them to keep down weeds for a bit while they establish? Correct?
If that is the case, then I would definitely not use chippings. They are useful if you are going for something incredibly architectural, where you literally want just one tree and then loads of clear space around it. However, if your overall desired effect is a kind of fuller or more cottagey garden, they will quickly get in your way (maybe not in year 1 but in years 2-5!) Also, gardening is amazing and so much fun that you will probably get addicted once you start to see it thrive. Then you will want to buy more plants and put them in. It will be easier to do this with soil that isn't covered with stone. It's also easier for plants to spread themselves out as they grow.
I would also avoid membrane with either chippings or mulch. It won't necessarily help that much and it can get all mushroomy and damp and stop the soil breathing quite as well as it should. I used it as weed sheeting in my garden when I was first planting, and in places the soil underneath went weird and slimy.
I would instead get a big ole thick covering of organic mulch (something really dark and wonderful like compost + leaf mould) down. And I am talking a good 3-4 inches on all the bare bits. This will do several things. It will keep weeds down, it will give your new plants lots of lovely nutrients and it will gradually get incorporated by worms and other minibeasts, building up a really lovely rich culture in your soil. After a while (6-12 months?) it will break down and vanish and you will need to put more on - you can replace it with more mulch or with something like strulch which I haven't used personally but hear great things about - it is a bit of a longer-lasting mulch that is supposed to work really well once you've improved the soil.
Now here's the bad news: you will still need to weed! But in a small space, it's not that bad, promise. Another bit of bad news: cats do like to poo in mulch or smaller chippings. Mine treat mulch like ultra-soft loo paper. However, in mulch it will just break down in the soil and hopefully cause you no problems. Just get yourself some gloves to weed to be on the safe side!
I'd also make sure that anything you put in gets a bit ole load of compost in the hole you dig to plant it.