What kind of online business would you suggest to set up?

I set up an online web-hosting business not that long ago and started to make profits relatively quickly through advertisement. However, I'd say find something you're interested in. I was very interested in computing and computer systems so setting up that business was both interesting for me and got me some experience that I could use on a CV.

However, I know a lot of people make profit off of selling things on amazon and ebay that they can buy from local shops and sell for more online if that's something you'd be more interested in. Try googling it.