am getting lots of popup all of a sudden. what to do?
Have a MacBook Pro, purchased in 2008. I'm using OX X Yosemite version 10.10.2. I have 4 GB memory.
The problem: today I was trying to view a website for shopping (Bed Bath and Beyond) and print out some coupons. I was suddenly inundated with pop ups and now those pop ups are showing on other websites as well i.e. Amazon. I also get a constant message that I need to upgrade my Java (which I did try to do unsuccessfully). I also get a message about using a MAC spyware service...which I've been told by the experts at the Apple store in the past is useless. So...I think somehow I've compromised my MAC. Any suggestions much appreciated.
MacBook Pro (13-inch Mid 2009), OS X Yosemite (10.10.1)