I am looking to improve my inside shots, so I've decided to look into buying some sort of lighting. I have a Canon 50D with various lenses (fixed: 24mm and 50mm -- and then the default one that came with the camera). I'd like to take some product shots and other various people shots inside against my white backdrop. What would you recommend I use? Can I just use a softbox? Do I need 2 (one on each side pointing at subject)? Do I need anything else? Is it better to have the light on continuously? Or strobe, where it just goes off on exposure? Thanks so much everyone!