MacBook Pro 2010 running really slow how can i clean it up
I have a Macbook Pro bought in 2010 and it is running really slow, I called a tech service and they said I have way too much junk on it and unnecessary files but they wanted an insane amount of money to fix it for me. CanI just clean it up myself? And if so how> Help please thanks
MacBook Pro (13-inch Early 2011), iOS 8.3