Cached files taking up storage... which ones can I delete?

Hello!

I am currently trying to clean up my Macbook Air as it had been warning my storage disk was filling up, and when I opened up the storage section the majority was in the 'other' category. After some internet research, it seems most people recommend to delete cached files from the ~/Library/caches in Finder that aren't necessary. However, nobody gives a clear guide on which ones are necessary or not and, as I'm not a computer expert, I only know the basics of what each cached file is and couldn't begin to comment on their worthiness, but I do know that they're taking up a whole lot of space.

Please help! Also, if this is a dumb question I'm so sorry I'm doing my best.

Thanks!

 

Do Not clear any System/cache files.