Problems with downloading online with mac

[KIDSISTA96]

I've had my mac for a while now and all of a sudden it starts breaking down on it wont let me download anything from the internet and it's starting to slow down on me and i don't know what to do. I need some help.


I'd really appreciate if someone would help me.

 

[John Doe 57]

What type of Mac are you using?
What version is the Operating Software on your Mac?
Which internet browser are you using?
What are you trying to download?