I know there are loads of threads similar and I have looked at them but they didn't really answer my question. I have a D3100 and I'm going to buy a Yongnuo yn560 after reading good things about it, and at that price you can't go wrong. Anyway I would like to get the flash of camera and I wouldn't really be wanting to use it as a slave. I understand I would need a wireless trigger but I really don't want to be spending a lot. What can I get without going wrong, I done a search on eBay but there are loads of different ones. As I said I don't want to be spending anything much really. Thanks in advanced!