hey cal,
multiple off camera strobes with PW's (i use radiopoppers) and umbrellas is all good and fine. I do my fashion work with such setups. BUT if you really are looking for decent quick and dirty lighting and don't want to bother pushing to the whole wireless off camera with modifiers route for your first hired job, here's a dirty tip. You do need a hot shoe strobe, but put it on the camera, and find a white wall or door to bounce it off. A corner of a room works as you can get a white wall background (be sure not to put them against the background, keep them a few feet off it to throw it out of focus) and have a white wall to bounce light off from the side. Use your 60mm lens, it'll be much sharper than ur 18-55.
Here's an example i shot today of a girl receiving a community service award. Please note that this is NOT one of my professional portraits, its quick and dirty on-the-go lighting using an on camera strobe bounced off a door behind me and to the right. this turns the door or wall or whatever into a giant softbox.

Here's one without the flash to see the ambient fill light level. the rimlight is from a nearby window behind to the right.

and a diagram of the lighting:

by no means a top standard pro portrait, but for a quick job with no ability to set up tedious lighting, not too shabby. and pretty simple to replicate.
also, for posing, have them angle their bodies at about 30 degrees away from you and then turn their head towards you. dont dare let them face their body flat on to you. hope that helps. Cheers,
Chris