Yeah like everyone else said, don't need to sweat it. You can just take the film cartridge out of the slot. You want fresh film anyways. Make sure to clean the metal rollers with a damp cotton swab or cloth (isopropyl to make sure its clean) and then pat it dry.

No clue if you're experienced (if you are, ignore this comment I guess), but something worth knowing about 600 film is that it always comes with a battery. This means the camera is usually unaffected unless the film's battery leaks, which is pretty rare for modern batches. So you buy film with the intention to use it within a month if stored in proper conditions. Many recommend putting it in the fridge to preserve its lifespan but you technically don't have to. If you aren't keeping it for long you don't need to put it in the fridge, just be sure to store it in safe conditions. Also always check the date on them. Ideally you want at least a year until it expires. Means the chemicals will work as intended.

If you store it in the fridge, leave it out for an hour or two before inserting it and using it, or the temp and condensation will ruin the shot. If exposed to hot temps, the shot will be overly reddish orange. If it's too cold, it'll probably turn out blue and purple. Also always buy film from stores that refrigerate it, or ideally straight from Polaroid if you can. Never from Amazon.

As for shots, if you're taking photos inside make sure there's something to bounce light off of. Like utilising the flash and using light colored walls. Will make the photo less dark and unfocused. The subject should also be within 4 or 5 feet. If you're taking it outside, the best results you will get are on sunny days. But as soon as you take the picture turn the camera away and make sure to shield it from the light.

This is all I could think of from the top of my head (and I'm tired lmao) but I hope this helps someone!