We've been using organic coconut oil for some years: - for cooking - taking off makeup - moisturizing (great for softening up and plumping up that elderly skin) It seems pretty "neutral" to me ... no extra weird "ingredients" that aren't good for you. And it's cheap!
I take a tablespoon of it every night in that hot Teeccino chicory drink I have. There are articles on the web regarding coconut oil reducing the risk of dementia. Part of the issue relates to statins reducing healthy fats from our systems.
Opinions on storage are all over the place. I keep mine in the fridge, even though it makes it tough to dig out of the jar.
I use a tablespoon and a butter knife, being careful to not jam the knife in too hard...those jars are flimsy. You could always run the spoon/knife under hot water, as you would do for ice cream.
Good questions. This search seems to indicate that coconut oil can indeed go bad, with tips on what to look for. However, we seem to use ours up faster than it can go rancid. https://duckduckgo.com/?t=ffab&q=does+coconut+oil+go+rancid&ia=web