You'll need to take multiple shots of a certain item /object, I usually do about 7 shots. Keep the camera on a tripod or if you don't have a tripod balance the camera on a wall (just make sure it doesn't move ). Take one shot at 1/40, one shot at 1/60 and so forth until about 1/250, import these into your PC and onto Photoshop then 'File' -> 'Automate' -> 'Merge to HDR', select your photo set and 'OK'. Once Photoshop has finished combining it will give you a final say before you Merge all photos, fine tune if needs be and 'OK'. Once this is doen you will have one HDR image ready for editing.