I hate flash! Hate it! But I know there are times when I need one. I only have my on camera flash and I refuse to use it so, of course, there have been times when I haven't been able to take pictures or they are so underexposed that they aren't worth keeping. I know nothing about external flashes...NOTHING. So please talk slowly I would like to purchase one so I don't HAVE to miss a shot if I need it. I have a Canon 30D. I don't want to spend a TON of money (I don't even know what the cost range is or what the difference would be between a cheap one or an expensive one), but I don't mind spending a few hundred. I don't know if it makes a difference, but I'm mostly interested in shooting people/kids. Any suggestions??