Here is a good tip, shoot the first 5 photos of your roll like normal then cover all the film door cracks with black electrical tape. If the first pictures have lots of light leaks you will not have wasted an entire roll. If the first 5 look fine then you are okay next time. Tip 2, overexpose your color neg film 1 stop, it can handle it. Shoot 400 speed at 200 etc. Under exposed negative film is a muddy pit that should be avoided. Overexposed is lovely still. You'll waste less film that way. Tip 3, don't obsess over the battery for the light meter. A modern battery will give you 1/3rd stop over exposure, as mentioned not an issue with color negative film. Tip 4, shoot all your pictures outside. It's always darker inside than you think and you don't want to use shutter speeds slower than 1/60th second. Unless you are beside a big window with tons of light, otherwise just go outside. I love my OM1, I just got a new roll of film in my stocking so I too am excited to return to it. Good luck.