I have a mac book pro running el capitan (version 10.11.15) mid 2010 with 4GB of memory I have deleted numerous files including movies ( i have a youtube channel but I do transfer movie files onto external hard-drive then delete them from hard-drive) music, photos and yes I have emptied the trash bin. I go to click storage upon the about my mac and it states i have 213.73 GB of memory still stored. is there something else I should look into deleting? are there files on my computer that I do not need that I can delete? i've tried downloading several apps that are supposed to tell you exactly what is being used but no matter what I delete it still says my storage is almost full. i've tried researching this on my own but have to be honest i'm afraid to try something at this point b/c I don't wanna make matters worse. if someone can please help me out. I'm starting to feel like this is affecting how the computer preforms b/c it won't shut down properly anymore. thanks in advanced.