I am new to this forum thing but I thought I would give it a try. Photography is a hobby of mine but has slowly become incorporated into my job as a graphic designer. I am still learning a lot about photography and how to set my aperature/shutter speed in order to get the correct exposure. I have recently been asked by my employer to do a photo shoot of three owners of a restaurant for our magazine cover and I am very nervous about it because I am not sure what the lighting situation is inside the restaurant. Long story short I think it might help for me to invest in a external flash. However I am on a budget and can't really afford the Nikon Flashes right now. Is there anyone who can recommend a simple third party flash that can be mounted on my camera but also used as a slave later on if I want? I own a Nikon D5000 so it would have to be a flash that works with that? Any help would be appreciated. Thanks!