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You don't! That would expose the 35mm film to light ruining it. I used to develop 35mm film at home, and you had to pry open the metal canister, wind the exposed film onto wire reels then place the reels in a lightproof container (very tough). It had to be completely pitch-black, then you use a developing solution poured into the lightproof container for a pre-determined time at an exact temperature, shake it for a number of minutes, then drain that out, pour a stop-bath solution in which stopped the developing process, shake, wait, then pour a "fixer" in which stabilized the image onto the negative. After all that was done, you rinse the film in pure water for a time and remove it, cut it into sections and hang to dry. And that was just for black and white! Color was tougher! And you had to develop your prints, too! Thank goodness for machines, which do all of this automatically!

You need to take your film and have it developed. They will supply you with negatives. If you want "positive" images, use 35mm slide film and request that it be delivered "unmounted" so you can scan it, or use a slide adapter to scan slides. Either way, use a high DPI setting to get the most detail out of the small, 35mm image. (some suggest 3200dpi if your scanner is capable of it, if not, use the highest available to you). NEVER open a undeveloped roll of exposed film without a darkroom and developing experience. It will be ruined INSTANTLY!!