I work with one 580ex2 and a shoot thur.What kind of set-up could i get with just these items. I do like where the image is soft and the lamps/candle are glowing in the backgrounds
Usually, I meter on the room, and use one light (strobe) pointed at the ceiling. I also like to incorporate the ambient lights into the scene. Speedlites are quite nice though, for salvage of what limited space you have in either a bedroom, or a hotel room. With those, it comes down to whatever modifier I need to create the look I'm going for. That can vary quite wildly.
i've taken to using two shoot-thru umbrellas (but in bounce position) out front. no exciting shadows but it's flexible and the model can move around without getting out of the light like with softboxes. i have a hairlight on the ceiling i can add to the mix. and sometimes i add a 4' octabox behind me for fill. sometimes i'll bounce a light off the ceiling. i generally prefer it light and airy (porn lighting basically). but some people go for a darker, voyeuristic boudoir style with lots of shadows.