This is my first asking for help thread on these forums, though I severly expect it will far be from my last. A little about me. I'm 25 and have been in love with the idea of photography since I picked up my first National Geographic. I love photo journalism, candid portraiture / street photos, landscape and nature. I've only recently started to think about getting serious with photography, so i've become a sponge. I have a Canon EOS 30D. Currently I have the stock lens (28-55mm f/3.5) and a (L series 70-200mm f/4). Looking on expanding by at least one lens in the near future, probably a 50mm f/1.4. As well as looking at picking up a flash of some sort. Today's question pertains to Shutterspeed. I've seen some amazing night time storm and landscape photo's, and I'm wondering how to go about replicating the technique. For the most part the idea is a low light area, tripod and a long shutter speed (i've seen up to 5 minutes mentioned on the forums). The max my camera will let me slide up to is 30 seconds, then it indicates "bulb". How does one get the camera to keep the shutter open for longer than 30 seconds? While I'm on a topic, can anyone recommend some good reading (book or internet) about light. I'm having the damndist time understanding lighting in relation to portraiture. (I've already purchased Understanding Exposure, but the section on light was rather weak).